Been a part-time linux user since the 0.9.x days (that was a whole lot of 3/5" floppies to download, too!) These days most of my systems are either Ubuntu/Debian or the custom version found on devices from www.embeddedarm.com.
I'm the senior software developer and also the computer "catch-all" guy at our small company. I generally write in C for Windows, but have dabbled with writing C for linux and misc www scripting languages. I also set up and maintain the company's external internet (and internal file) servers.