I just started adventure mode yesterday, but think I have already found my favourite. At first my thought was the whole "lop off hands and feet with a sword," which was cool. That then upgraded to "see how many decapitations I can get" once my swordsman skill got high enough to do it consistently (got 3 pages in the inventory of trophy heads). Now, the method has been perfected...
(Bit of background, I spent around an hour or so today figuring out how to find my abandoned fortress in adventure mode, mainly because all the various maps (shown in embark, reclaim, adventure local, adventure fast travel, adventure map) are ALL different scale, so it took forever to even figure out where I was, and around a dozen failed new adventurers who died before figuring out where the heck they were. Anyway, it was all worth it when my swordsdwarf came upon Azmocerol and found what was waiting for him... A full set of candy armor, weapons, some anvils, giant axe blades, and a dozen or so 'large , serrated adamantine discs' ).
Despite starting out with no points set in Throwing, since switching to discs I see 'sailed off in an arc' about 3 out of every 4 throws, compared to my adamantine sword's rate of 1 in 3, with legendary status. Ultimate frisbee just got ultimater.
tl;dr:
Large. Serrated. Adamantine. Discs.