BT sport here in the UK came up with their top ten fights of 2015 and I was curious if the UG could do any better so here is their list.
10. Ferguson vs Barboza
9. Bisping vs CB Dollaway
8. Rousey vs Holm
7. McGregor vs Mendes
6. Pickett vs Almeida
5. Browne vs Arlovski
4. Stephens vs Bermudez
3. Velasquez vs Werdum
2. Cormier vs Gustafson
1. Lawler vs MacDonald
Overall a pretty good list, but a bit of UK bias with the Bisping and Pickett fights but I can't think of what I'd replace them with right now.
Bungle2711 - BT sport here in the UK came up with their top ten fights of 2015 and I was curious if the UG could do any better so here is their list.Think I'd take the Bisping Leites over the CB fight. Also not sure I'd put DC Gus so high but other than that a pretty good list
10. Ferguson vs Barboza
9. Bisping vs CB Dollaway
8. Rousey vs Holm
7. McGregor vs Mendes
6. Pickett vs Almeida
5. Browne vs Arlovski
4. Stephens vs Bermudez
3. Velasquez vs Werdum
2. Cormier vs Gustafson
1. Lawler vs MacDonald
Overall a pretty good list, but a bit of UK bias with the Bisping and Pickett fights but I can't think of what I'd replace them with right now.

Source?
Lol Bisping vs Dolloway didn't even get FOTN on the card it was on, definitely not a FOTY.
Ortega vs Tavares and Oliveira vs Lentz II were two other better fights off the top of my head.
calpolkid - Source?Beyond the Octagon end of year special

stopped reading at bisping