The new Pocket Wizard ttl system will trigger the 430 EX II in both TTL and manual modes. I don't have an original 430 to test, but I suspect it will also work. The TT5 receiver can be fired from either the new TT1 transmitter or any older PW transmitter (though you only get TTL and high speed sync, etc., from the new TT1.) The upshot is you can mix speedlights and studio lights together in one setup, mixing manual flash, TTL flash, etc., in whatever way you like.
The 430 EX II is the perfect flash for this, since it doesn't seem to suffer from any RF interference (which is killing me with my 580 EX IIs.)