The Hermes Cape Cod Deux Zones Series looks classic and elegant. And I love how one of the clock faces of the Fendi Secret Dual Time watch is always very subtly covered.
Of course, when it comes to double time watches. one must not forget Philip Stein. There are classic ones like the white one or fun ones like the purple one- whatever combination you want.
And if you really travel ALOT through multiple time zones, there is this funky multi-faced Moschino watch on the left. The other day I saw someone at work wearing it and it looked so cool (and hence inspired my blog). I know, it doesn't have much picture appeal, but it looks very cool on the wrist.