shows that do it for me:
How I met your mother - freakin awesome, busy waiting for more episodes of season 3
Dexter - seen first season, getting second season tomorrow
Heroes - at least while it lasted, pity
Prison Break - still need to finish season 3, can't believe I've been beaten by Mnet
I'm sure there's other stuff I watch but that is what does it for me.
Oh then there's topgear, and a webcomic called questionable content (
www.questionablecontent.net)