I remember seeing Jabbawockeez on ABDC. I can't believe it has been so long since they were on that show; I must be dating myself. We bought same day tickets for their show at the Tix4Tonight booth only a few hours in advance.
The theater where they perform is super low tech, which is kind of a shame. But their dancing is so good that they can rock it no matter where they are.
The show was only about 75 minutes long and it was fun. There was a good amount of audience participation throughout the performance.
I would not say this is a must-see show when you're in Vegas but the time, location, and price worked well for us and we had a fun evening.