I have around a dozen MMA dvd's (UFC and some other ones)
The best of 2007,2008... 2011 DVD's I watched multiple times.
On you tube sometimes rewatch the fights of Fedor, Wanderlei, Brock, ...
Boxmatches I often rewatch: Tyson fights...
It's like watching an old movie you already saw years ago but liked so much that you watch it again...
edit: I don't save fights and stopped buying mma dvd's after "UFC best of 2011".