10 of the most unforgettable moments in the history of The Ultimate Fighter

#7: Leben spritzes the bed (Season 1)

Chris Leben shot to fame on the inaugural season of TUF

Nobody was really sure exactly what to expect during the first season of TUF; after all, nothing quite like it had ever been televised before. After the first episode had ended though, despite no actual fights being shown, a ton of viewers were simply hooked. Part of this definitely had to do with the outrageous personality of TUF's original bad boy, Chris Leben.

Seen as one of the best prospects in MMA at the time, hardcore fans were excited to see Leben in action, but 'The Crippler' stunned everyone with his actions in the first episode. Essentially, the whole episode was the Leben Show, as he got incredibly drunk, talked a ton of trash, and then decided to urinate - or "spritz", in his own words - on fellow contestant Jason Thacker's bed.

The incident shocked everyone from Leben's fellow castmates to the viewers watching at home - but said viewers were perhaps even more gobsmacked when Leben showed up to training the next day and performed incredibly well for a man who'd been extremely drunk the night before. The episode showcased the wild side of Leben - and the hard-working side, too.

Leben would go on to have a successful career with the UFC that spanned almost a decade, but even as a hardened veteran, many fans still remembered him most fondly for this outrageous moment that arguably cemented the popularity of TUF for good.