We have hired DJ Moose Moran to DJ our ceremony and reception.  He did my best friend/bridesmaid Sonja's wedding as well as my co-worker Jill's wedding (thanks to my recommendation :)).  He is affordable, personable, and Jill was impressed by how he was able to adapt to her music tastes after just seeing their little questionnaire with the Must Play and Do Not Play lists, etc.  Works for me!

We are also compiling a list of potential wedding songs.