You want to really show off?
Bach's Cello Suite No.1 in G in the same octave as cello, on a 4 string (you will need 24 frets but it is playable - just).
That absolutely blows people away, and best of all it blows people away even if you cant play it at the same speed as Yo Yo Ma or Patittucci (he cheats anyway, he uses a six string

)
Learnt this at college, it took the best part of 6 months to really get it down to tempo (working solely from the dots to improve my reading), but it was soooo good to be able to fill any space in literally any gig, people seem really receptive to it as a filler if a guitard breaks a string or the drummer has passed out or whatever. I covered space in all kinds of rock and funk bands (and yeah you can make it swing for a laugh too) with this and it always had huge wow value!
I've forgotten the middle section (to my tremendous shame obviously) since, but that's due to a 5 year lay off. I certainly intend to find some time to figure it out again. Just because it really is he nicest thing to be able to play well. Bach rocks!
Oh and not knocking Anaesthesia but I learnt that long before I learnt the Bach piece and it is way easier, and has been done by a lot more people as a result. Its a cracking piece all the same, but I think the Bach piece has the advantage of a) sounding like bass, and b) being recognised by a wider audience.