I know everyone likes and uses Notepad++ but I tried Sublime Text 2 and wow I felt in love with it The out of the box expirence is better than Notepad++ as much of Notepad++'s plugins are already a part of Sublime Text 2. Plus search is A LOT faster....
What source code editor do you use, why and with what language?
Sublime text 2 with package manager and a few plugins.
Jeffrey Way did a cracking tut on sublime text plugins on nettuts. Really recommend it.
Sublime is so much better with the plugins he recommended, especially zen coding. Ill never go back to writing HTML the way I used to.