I can almost tell that this was a kind of joke that was written by Tim Kring or one of the other writers or producers of the show. When sylar gets his powers in the alley way, and the first thing he does is try to grab a can using his telekinesis. well if anyone noticed the can was a can of "Spinach". and he realized he got his powers back once he got the spinach can in his hand. Coincidence maybe but, i highly doubt it. (For those of you who haven't seen Popeye or simply dont get it; Popeye gets very strong when he eats spinach so when Sylar got the spinach can in his hand he realized his powers had returned.)
EDIT:
QUOTE
After being electro-zapped by Elle, Mister Eyebrows escaped to a back alley and skeevily injected himself with Claire's (Hayden Panettiere) blood. Then, in a wicked salute to Popeye, he telekinetically grabbed a can of spinach and said, "I'm back!"
from tim kring
interview with tv guide. (Thanks to GenetiCDisasteR)
Heroes Sylar Popeye Joke(Stage6)Heroes Sylar Popeye Joke(Y-Tube)
