While longswords used to be a staple back in 2ed (hey, they did d12 vs. large), now I rarely see them used. I see (in a rough order):
Two handed martial weapons (both reach and no reach)
Bows
Simple weapons
Light weapons (for TWF)
Finessable weapons
Specialty weapons (spiked chain)
Almost no one uses a shield, and the TWFers seem to go more for two light weapons. 1H martial weapons are out. I see more longspears then longswords. Morninstars and other multiple-damage-types are also not unpopular.
Hope this helps,
=Blue(23)