Capcom vs SNK 2, Garou: Mark of the Wolves, Street Fighter Alpha 2&3, SFIII:Third Strike, Jojo’s Bizarre Adventure and Project Justice (which has always been a "must") have been bolded on the list. Thanks guys!
I picked up Soul Reaver last year and loved it. Prior to owning it, I played the shit out of the ODCM demo back in the day. Tony Jay's voice work in that is awesome! He played Shere Khan in Tale Spin and Megabyte in Reboot. You know it when you hear it.
As for 2D Dreamcast fighters I already have: Last Blade 2 (US), King of Fighters Dream Match 1999 (JP)
My 3D Dreamcast fighters: Soul Caliber, VF3tb, Power Stone, Power Stone 2