Improv-comedy shows, unlike criminal-court proceedings and open-heart surgeries, encourage people in the room to shout out suggestions. Explore the extemporaneous with this GrouponLive deal to see The N Crowd perform at The Actors Center, with shows every Friday at 8 p.m. For $12, you get two general-admission tickets (a $24 value). Since 2005, The N Crowd’s troupe of off-the-cuff comedians has performed more than 400 improv shows in Philadelphia. Each 80-minute show is dreamed up without scripts or directors who angrily throw down their berets. Audience suggestions inspire the onstage antics, ensuring a brand-new experience every week. The seasoned ensemble has performed at such events as the Philadelphia Improv Festival, Philly Fringe Festival, and the North Carolina Comedy Arts Festival.