Both Gallagher (Starting out: the caro-cann) and Schiller (Complete defense to king pawn openings) (OK, Schiller is often criticised, but this is actually a decent book) give 5. Bb5 as the most popular alternative

Gallagher discusses an interesting game, Greet-Arkell, 2000
1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 Nc6 5. Bb5 e6 6. Be3 Nge7 7. c3 Bd7 8. Bxc6 Nxc6 9. f4 (9. Nf3 Qc7 10. Bd4 Nxd4 11. cxd4 b6!) g5! 10. fxg5 (10. Nf3 gxf4 11. Bxf4 Bxc5 12. Nbd2 Qb6 13. Nb3 Bf2+ 14. Ke2 Na5 15. Nxa5 Bb5+ 16. Kd2 d4!, David-Khenkin 1996) h6!? 11. gxh6?! (11. Nf3 hxg5 12. Bxg5 Be7) Bxh6 12. Qe2 Qh4+ 13. Kf1 (12. g3 Qe4, 13. Bf2 Qg5, 13. Qf2 Bxe3) Bxe3 14. Qxe3 Nxe5!! 15. Na3 (15. Qxe5 Bb5+ 16. Ne2 Rh5! 17. Qe3 Rf5+ 18. Kg1 Qe1 0-1) Ng4 16. Qd2 Nxh2+ 17. Ke2 Qg4+ 18. Ke1 Nf3+ 0-1

Arkell has also faced Gary Lane's 6. Bxc6, see http://www.chessgames.com/perl/chessgame?gid=1283858

Schiller mentions 
1) white's alternatives 7. Ne2 and Nf3
2) black's alternative 10. ...Nxe5 11. Nf3 Nxf3 12. Qxf3 Bg7 13. 0-0 0-0 14. Nd2 Qc7!? and black should play for e5 and Be6/c6 

Other alternatives to 5. Bb5 are 5. Nf3 (black plays...Bg4 before e6) and 5. Bf4 (...e6, Ne7, Ng6). 

There are obviously a lot of possible variations, but enough typing for one night. For inspiration, you could check out a nice game by Turov  http://www.chessgames.com/perl/chessgame?gid=1249603