DoTimer (and the included CDTimer) are both excellent addons, IMHO, and can be found on Curse Gaming.
I’d also recommend trying out the mods listed above. Instead of Photek, though, one other choice is XPerl, if Photek just isn’t for you.
CTMod has some useful addons (but their full suite is NOT worth it.) I like CTMail, CTBuff and CTMap.
Titan Bar is also excellent as an alternative to Fubar.