Web design
For webmasters, I recommend HTML-Kit. It's just like NotePad -- the best coding program there is :) -- only easier to look at and with handy tools.I also recommend PHP, which is probably the handiest coding language ever.
w3schools for learning any type of web language imaginable [and a very handy CSS2 reference page].
Music
Metallica. That's all there is to say.Also Winamp.
Art
openCanvas1.1 - probably the best free raster program there is. [if someone knows a working link to a safe oC download page, please e-mail it to me]Inkscape - a free vector program.
Browser