P - HuK, Pigbaby, and Incontrol's stream is fucking funny oh my god. Also, whenever Stork plays I pay attention, he's been getting good results lately and I hope the last dragon wakes up from his long slumber.
Z - Jaedong, Scarlett, and anytime soO or any other SKTelecom T1 zergs are playing, I'll tune in.
T - Taeja, Fantasy, and Flash...the latter two mostly because I hope they wake up and remember they have better mechanics than everyone in the world with exception to Jaedong.
Zerg: Jaedong. Loved him since BW, can't stop now.
Terran: Probably Maru? I really liked Thorzain's play when he was actively playing. I love watching terran do that awesome boa constrictor play where they just slowly squeeze the life out of their opponent.