http://mirrors.planetetf.com/TF-based mod for the free ET engine
very fun imo. its like tfc, but rockets/grenades don't ahve an insane radius, gas grenades don't stack, pyros can actually use the rpg to jump, etc
theres no "bhop" per say, but you can keep off of an explosion(skimming)
worth a shot if you like the TF style games. don't play it once and hate it, play it in a lan to get used ot the physics for a few. concs are strange as well, they actually hurt your ability to move and aim.
overall i think its the best TF game i've seen, basically what TFC should have been imo
!
edit;
to play you install ET then patch, then install ETF