I think the Half-blood Prince is going to be hilarious in some scenes, as far as I could see in the trailers!

i just loved ron's dress robes, you can always count on rupert grint for some comedy

Yes! The dress robes :)
I also loved when Harry didn't know that Ron actually "told" him about the dragons.
Oh and of course you can't forget Moaning Myrtle in the bathroom during the tub scene!

the fourth film! it was hilarious!

But not in a good way, unfortunately... lol. It was like they were trying to make the movie into a comedy. :/

I liked the humor in the 4th film. :]

so bloody hilarous i couldnt stop laughing!!

I Remember all the funny scenes in the Fouth Film

1 Moaning Myrtle
2 Ron Dress
3 When Filch run to tell Dumbledore's that the champions already arrive
4 Filch starting the Cannon to Early
5 When Harry try to Ask Cho to the Yule Ball
6 Snape, when he "bully" Harry and Ron in Class

and don't forget Ron dance with Minerva McGonagall

and many others

Well Harry Potter isn't really fun but it has some cheap packages

Deathly Hallows

Half-Blood Prince