Wizard CDR builds?
There are a number of Builds that revolve around Critical Mass. Check out this reddit
http://www.reddit.com/r/Diablo3Strategy
Search for Melee Wizard (Below is the link to one of the articles about that build)
http://www.reddit.com/r/Diablo3Strategy/comments/vsrxg/wizard_making_the_push_from_blizzhydra_to_melee/
This build requires a decently high crit chance (over 25%) in order to make your cool downs reset fast enough to spam Frost Nova/Diamond Skin. Otherwise, it seems like a fun build, give it a shot and see what you think :)
Note: I am not currently using this build, but am considering a move to the melee wizard soonish.
I've been recently trying out the melee wizard "windup" build featured here. The site posted some starter gear recommendations to give it a try on the cheap, but you do need at least ~25% crit chance to start using it effectively. I don't run it all the time, but it's a fun build.
Taken from windupwizard.com, here's the standard build:
Left Mouse: Energy Twister / Wicked Wind
Right Mouse: Energy Armor / Prismatic Armor
Active Skills: Frost Nova / Bone Chill, Diamond Skin / Crystal Shell, , Explosive Blast / Chain Reaction, Teleport / Fracture,
Passives: Critical Mass, Unstable Anomaly, Temporal Flux
Order is important so you can rapidly hit Frost Nova/Diamond Skin/Explosive Blast sequence. Build calc on the game guide: here.