Omega, some.
Others can be:
JLC - I love the compressor designs.
IWC Portuguese Classic (in house, cool movement)
And of course Omega:
1) First Omega In Space (a.k.a. FOIS)

And the one that I'm wearing today:
2) Speedmaster HB-SIA (I love this chronograph / GMT)

Cheers,
Nilo
Note: Don't forget the GP WW.TC (another true keeper)