A collection of 'virtual watches' for the iPhone, runs great on the iPad too.
15 different watches, 27 different watch faces (most watches have a front and a back face), some watches have up to 16 hands on a face. All tied to UTC/GPS time, or any date between 3500BC and 2800AD. Calendars, astronomy, other time zones, it's an awesome app, a geeks delight.
Check it out.
I didn't see any specific forum for ipad App suggestions so I posted here.
I am in no way involved with the authors of this product, I just loved it so much I had to come and tell people about it.