Nothing's more depressing than doing something hilarious, jamming the F6 key and seeing "this server does not support replays."
I did Play Now, but it actually matched me with a "real" server, instead of a Valve-hosted server. It still was pretty low-mid tier pub play, and I was mostly kitted out to mess with the new Deus Ex items. So I was a Sniper with the Machina (scope-only shots), Jarate, and the Shahanshah, which I'd never messed with before much either. We were on Steel, A was capped, and most people were moving on to B. I went A - E, because I just like doing that, and sniped a Pyro trying to kill a friendly Scout along the way.
I ended up behind B. I knifed a Dispenser behind the point to death, took a bit of Sentry fire, threw my Jarate (but only got a Medic), and had at least three different people come at me swinging at the same time. I murdered them all with my knife, including the Medic with full uber. I decided to head toward C on the off-chance I could disrupt an Engineer there if we got B, "killed" a Spy along the way, and took the lower route by the big health kit. By this point the Spy had grabbed the kit and De-DRed, and had some shoddy disguise. I hit him again, and he almost immediately De-DRed, probably by accident. Despite his relative advantage (like having a working gun without scoping), I charged him, and he backed up...
Right into the giant pit under E. Backpedaled straight to his death.
It was so much funnier the way it happened, it's frustrating to find out you can't save replays when it counts.
New Sniper Rifle's a beast; the Widowmaker is fun, but needs to either eat less metal or increase your total metal to 300.