Could you please help me appreciate OS X more?
foljs: Some apps and stuff:Coda or Espresso, (html IDEs)
Adobe Creative Suite, ('nuff said if working with Bitmaps, Flash, Vectors et al)
Terminal.app, (CLI love)
UNIX (tm), (a full blown unix under the hoods)
CSSEdit, (css editing)
TextMate or BBEdit, (programmers' editor)
Scrivener, (writers' editor)
Navicat, (MySQL admin)
MAMP and MAMP Pro (Mac, Apache, MySQL, PHP stack),
MacPorts (app repository),
Vim, Emacs, MySQL, Postgresql, Python, Ruby et al (familiar unixy apps), 
Automator (task automation),
Omnigraffle (graphs),
sips (CLI image editing),
Pixelmator (image editing),
Transmit 4, (ftp client)
Little Snitch, (application firewall)Just google for the above...