The shortcut to switch tabs is…
TextMate:
Command + Option + Left/Right
Skype:
Command + Shift + Left/Right
Adium, Firefox:
Command + Left/Right
Colloquy, Firefox:
Command + Up/Down
Opera, Safari, Terminal:
Command + Shift + [/]
Dear Santa, please, bring me Mk 41 next christmas, so I can fix this world.
