I've been using aimirc on and off for the past few months. Both on the irc.zevils.com server, as well as my local IRCd and have been nothing but impressed. It seems like everytime I come up with a great new idea I go get the latest CVS version and it has already been implemented. Most importantly Matt is always around for help, when needed. I look forward to the new aimirc 2.0 release. All in all, aimirc is a wonderful product that Matt Sachs has put out and I encourage everyone needing some form of AIM client for Linux to try it out, sure does beat the heck out of the not-so-stable GAIM, and the buggy-as-hell TiK clients. ;-)
Home automation software.
Transfer of media files between iDevice and Mac/iTunes.