The folks at 37signals and Lypp are sponsoring a contest. Use Highrise and Lypp as part of a "mash-up" application. The programmers behind the top 3 applications will win some Apple gift certificates, free minutes on Lypp, and some free time on Highrise.

Lypp is a conferencing system, Highrise is an online contact/customer relationship management tool. There are some obvious synergies here between these two applications. If coding is your thing, get to work!