Some recent favorites for me/highlights from the past month:
"Bleach"
"Waking the Dead"
"That Mitchell and Webb Look"
"Phineas & Ferb"
"WordWorld"
"Busytown Mysteries"
"Leaves of Grass"
"Thunderbirds are GO!"
"Johnny Test"
"Electric Company" (new series)
"Doctor Who" (original series)
"Doctor Who" (new series)
"Torchwood"
"The Storyteller: Greek Myths" (I loved the original series, so I was especially delighted to discover this one)
"Twin Peaks"
"Roast of William Shatner"
"The Charlie Chaplin Collection"
"Slapstick Masters"

Those are just the highlights; we've watched many more.