We don't know who built PennShows, but we kind of like it. It's a super easy-to-use website that aggregates all the performing arts shows that are happening on any given days and lets you search for them. Just type in the date, and you can find out exactly what acapella/hip-hop dance/hilarious leading ladies/Jewish groups are playing when. The only thing we're not cool with is the website's use of puns, because they're a little too similar to ours. Sleep with one eye open, techies.