Okay I am not technically adept enough to do a screen capture. However at the very last frame of the opening subway shot of tonight's episode, there appears to be a message written in graffiti on the front of the subway.

I did freeze frame it on my DVR and it looks like it says 'evil me'. The me for the 2nd word is pretty clear. Evil is a guess for the 1st word. Peter is behind the graffiti.

I think it could be foreshadowing and they may be trying to tell us something.

Or it could just be my imagination getting the best of me.

I couldn't find it?

It's 9 minutes into the episode. Actually it's the 2nd subway scene (the first one after the commercial break). Suresh tells Peter, 'there are no answers, go home Peter' and then the subway comes to a stop and everyone gets off. Peter goes to the window of the subway and in the last frame you can see the graffiti to the right of him. Then it goes to the scene with Matt and his wife.

OK found it. It says "NY Metro". Sorry.

Well, sometimes a cigar is just a cigar, but the implication here is that someone other than present Peter and future Hiro wants to interject here.

Two possibilities:
1. Future Peter has borrowed Future Hiro's power and left a message to reinforce his friend Future Hiro's more direct message.

2. Near future Hiro realizes that time is manifold, not linear and that a potential future doppleganger he really doesn't like (*cough, cough* EVIL) is leading Present Peter down the incorrect path.

Time travel...brain...hurts...