For comic Tom Cotter, network TV brought a new level of attention
If not for his impressive run on last season's "America's Got Talent," comic Tom Cotter says, he would not be playing the Wilbur Theatre this weekend. The Providence native has played a lot of rooms in Boston, having come up in the scene here in the late 1980s and early '90s. And his résumé includes late-night TV, his own Comedy Central half-hour special, and appearances with his wife and fellow comic Kerri Louise …