It’s been ages since I played the two Force Unleashed games… and I got my 360 pretty late too. I was OK with the story (wasn’t expecting much anyway and could ignore it well enough) but I liked the gameplay quite a lot - I got all the Xbox achievements… the first game was slightly better iirc, I also enjoyed that there were more options to level the protagonist. Although kicking Ewoks in part II was so gratifying…
But best Star Wars game? Not by a long shot. I love(d) the X-Wing (and Tie) games, check out xwaupgrade.com if you haven’t already. KOTOR I&II were awesome too. Or Rogue Squadron 2, or Jedi Knight 2… I’d rank all of them higher than Unleashed. I haven’t played any of the newer games either, so there might be more great ones out there (itching to try Squadrons, but I lack the time).