You can read a full interview about the appearance on TVLine.
Some highlights from the interview:
TVLINE | If you could pick any of your past TV series to have run longer, which would you choose?
Profit. Without a doubt. That was television before its time, TV doesn’t get better than that. But David Greenwalt, one of the writer-producers on that show, has a new [pilot in development for NBC], called Grimm, and it is just as good. It’s amazing.
TVLINE | And Heroes? Dead, done, finito?
[Inhales sharply] Uh, yeah. I think it was done somewhere in the middle of Season 2, wasn’t it?