I know this is a wedding blog, but as someone who had their Bat Mitzvah in the early 1990s and a Paul Rudd fan, I had to share this video of Paul Rudd as The Bar Mitzvah DJ:
Paul Rudd: Bat Mitzvah DJ from Jewish Forward on Vimeo.
Simply because it reminds me of my own and the many Bar/Bat Mitzvahs I attended and also it's nice to see where people who made it big started out.
But since this is a wedding blog, here's a wedding DJ tip:
It's a good idea to not just hear a DJ in action but to also see a DJ in action. Either attend an event that the DJ is playing at or get a video of a wedding they worked to see what they're personality is like. Does he just stand behind the table and play music? Can he also MC or do you need to hire someone else to do that? Does he say things that you think are cheesy? Can he motivate and read the crowd?
Don't be afraid to ask for a video or if you call a reference, ask if you can see their video. Maybe they can email it to you.