Jabbawockeez is an awesome show. I don't think it's something, say, my parents would enjoy... but I thought it was so cool. It doesn't have the normal glitz and glamour of a Vegas show, but the sets and lights were pretty impressive considering that this is a show based around a dance crew.
I've been a total fan of the Jabbawockeez since their reign on ABDC. Their PYT dance was something I youtubed at least 20 times. I was psyched to see them perform it live. Unbelievable!
The show had good pace, great music, and the dancing was flawless. I liked that they had lots of crowd participation and the fact that they were able to inject some humor into the show.
Snacks are kind of pricey - about movie theatre prices and there will probably be a line. Every seat in the house is pretty good so don't stray away from getting the cheaper tickets. I also recommend not sitting too close so you can get a view of the stage and the dances as a whole. Also try getting getting a seat that's more in the center.
Don't forget to ask if there are local discounts (normally like 30% at the ticket booth) or buy the tickets at Half Price discounts.