The weather outside right now doesn't exactly make me pine for a bike, but in the summer months it does.
Last thing I owned was a ZX6R, just before it became the 636. However, in the past I've had FZR1000's, FZR6's, CBR6's, a GSXR1100K (the evil handling one) etc etc. Really miss trying (and succeeding) to get through a rear tyre in under 1000 miles... 🙂