Frame which flickers during the "FBI" to "ELE" warning transition. Bad Horse and three eggs? Hm, curious...
Greetings! Now that Dr. Horrible is so busy with the Evil League of Evil, he has 与えられた his assistant (that's me!) the job of answering 質問 about the Easter Eggs located on the DVD of his blog. Before we continue on, be warned that this 記事 will contain a different type of SPOILERS! So if あなた want to figure these eggs out on your own, CONTINUE NO FURTHER! Also, these are not your average hidden features. To access these special horrible-rific hidden features, あなた will actually have to go on a scavenger hunt of sorts. It seems that the Powers That Be really want あなた to dig deep to find these eggs! I guess the Powers haven't heard of "Google," huh?

At any rate, this 記事 will explain exactly how to find three hidden features on the Dr. Horrible's Sing-Along Blog DVD. And when あなた do, あなた too can enjoy the wonders of listening to the back stories of other infamous ELE members like Dead Bowie または Fury Leika. あなた will also be able to view Joss Whedon playing Captain Hammer, and Neil Patrick Harris performing fun and nifty "magic tricks" with his hands as he shoulder dances and Captain Hammer cries on a couch. [In case あなた were wondering, that last one wasn't a joke, I'm serious. Yeah, あなた were totally missing something によって not finding these eggs.]

EGG ONE: The Wonderflonium ブリーフケース (The Black Egg)
[Note: These first steps are not necessary to access the Easter Egg, but they are clues about how to get there.]
1) In the menu タイトル screen, click on "Languages" and then choose the "Wiccan" option on that menu, then play the movie. あなた will subsequently watch Dr. Evil practicing his laugh and read quirky (if half-assed) subtitles in "Wiccan" which will eventually tell あなた "ENTER AT 9780793529865."
2) Now where do I go from here, あなた may ask yourself. Never あなた fear, because Dr. Horrible's Assistant is here! Go ahead and copy-paste the number I just used into Google. Go on, try it. What is the very first result that comes up?

[This Guide Won't Continue Until あなた Google!]

3) That's right, it's the ISBN for Mariah Carey's "Music Box." I'm assuming あなた actually went and googled that and didn't just skip to step three? Good reader!
4) OK, Mariah Carey, you're thinking. What does Mariah Carey have to do with Dr. Horrible? Well go ahead and navigate your way over to the "Special Features" section of the DVD and click on the "Music" Featurette. Watch it for a while, until あなた hear a certain spunky doe-eyed redhead utter the name of the pop goddess. At that very moment, press enter on your remote, and あなた will be led to an Evil League of Evil Official Countdown, featuring the Wonderflonium Briefcase.
4) Be wary! For here comes the tricky part. Well now it's time to look at the back of your trusty DVD case. On the bottom of 発言しました case, 次 to the Mutant Enemy logo in the left corner, there is a message for Easter Egg hunters which reads "count the letters U+L+D+R" (in the order of the arrows on a DVD remote control... または a video game controller's fingerpad). So we know there is a "WONDERFLONIUM BRIEFCASE." Count the Us, Ls, Rs and Ds in those two words, press that number (OK, lazy bums, I'll tell you, it's 5) and then hit enter.
5) Enjoy

EGG TWO: Professor Normal's Head (The Green Egg)
1) Now that you've watched the "Music" featurette, why not mosey on over to the "What Just Happened?" featurette and take a good long look at them perdy credits. Notice anything funny about 'em? That's right, partner, they're colored yella! Try spellin' out them there yella letters and あなた get the phrase "ENTER AT ACT 2." So what do あなた think you're a-gonna do now?
2) あなた guessed it. Head on over to the actual film and skip ahead to Act Two (or right after the doctor says "Balls!") and press ENTER. You're lead to another ELE countdown screen.
3) Same rules apply for this one. PROFESSOR NORMAL'S HEAD = five again of the letters we need. So what number do あなた think あなた push? Yup, and now sit back and watch another fun and quirky clip.

EGG THREE: Dr. Horrible's Head (The Blue Egg)
1) Okey dokey, so now, maybe you're thinking the egg hunt is over and done with. So あなた decide to go watch your お気に入り scenes. Nothing あなた want to see in Act 1, so あなた head on to Act 2 and notice an interesting scene タイトル with Simon Helberg in the image. The scene タイトル is "Moist Dries Up." あなた don't remember this scene in the movie, so あなた click it, curious to see what it'll 表示する あなた and-- Oh! What do あなた know? It's another countdown!
2) Here, あなた have Dr. Horrible's head blinking at you. The number of letters we need in DR. HORRIBLE'S HEAD is 6. Type that in, hit enter, and enjoy.

So there あなた have it! The three major Easter Eggs of the Dr. Horrible DVD. I give full (half-- I'm evil, not stupid) credit to the good ファン and all their hard work at link and link. I bet other ファン sites have this info, too, though, so it's pretty much just collective knowledge now.

... Half credit because I feel like I jazzed up the instructions for everyone. または at least made the reader もっと見る annoyed with my jargon and teasing.

Anyway, that's all for now! I have to jet. The doctor needs his coffee, and it ain't gonna brew itself! Evil Assistant Out!
Screen that appears upon accessing files after ripping the DVD. There are ways of accessing it without ripping the DVD, though... I'll leave that one up to you.