The ones below could be categorized as unusual or different but I find each one beautiful or purposeful in their own way.
Have to start with the EL2. It is not for everyone as it is big, bold, a bit crazy, etc...but the sum more than justifies the parts.
Next is a watch I am wearing today. Early Roger Dubuis watches consisted of the more traditional Hommage round cases and a voluptuous cushion case that is neither round nor square. It is definitely not for everyone but I find it one of the most beautiful watch cases ever made.
The 3rd actually comes from Nico's collection or maybe it belongs to his business partner. It is a vintage JLC chronograph that I fell head over heals for. The oversized round case and lack of lugs makes it big but wear comfortably. Again, not for everyone but I thought it was amazing and so cool.
I think this last one will take the cake. I have been fortunate to try on many different and crazy watches owned by friends and fellow collectors. I will let this last one speak for itself ππ