LaunchBar 5

Looks like a lot of long-wished-for improvements are coming in the next version of LaunchBar -- support for multiple (global) clipboards is the big one for me. There are a lot of programs that provide this service, but the way LaunchBar is doing it looks very clean and robust -- a lot of data formats are supported. The ability to add an event to iCal from LaunchBar is also very cool.

Go look at the beta.