Bio: Funny "Heroes" actor-dad jams for charity with all-star band The Band from TV and tweets for epilepsy awareness for his afflicted son.
Recent Tweet: "Playing spelling Bee with the kids in bed. They're beating me. Are you smarter than a 5th grader? A Third Grader? & a Pre-K...'er?!! NO"
Follow Greg Grunberg: http://twitter.com/greggrunberg
Creative Genius Sam SimonSimon was more than just a talented mind - he served as an inspirational force...
7 Life Lessons from Reese WitherspoonAsk anyone in the business and they'll rave about her kind heart and willingness...
Celebrity Moms Who Gave Birth At 40+These celebrity moms didn’t let their ages stop them from having children in...
Which Celebrities Have Converted to Islam?Many celebrities are rumored to have converted to Islam. Find out which ones...
More on Twitter & Celebrities
»We Want to Know...Do you use Twitter?
More Entertainment Features