For me, it would have to be taste.. :p
Smell, if I had to choose :( I was going to say "Yoda!" but what other senses are there to lose?
Sense of balance?
Sense of temperature?
Sense of fashion?
:p
Yoda
But seriously, I'd rather lose my sense of touch...
I'd rather lose my Sense of Yoda.
Smell, the one I could live without.