I would say Obi-Wan is decent at best. I imagine you could snag it for a few bucks on eBay. The concept of using one of the joysticks to swing the lightsaber was kind of interesting, but it also brought limitations to the game.
The single player campaign was a retelling of EP1. I loved the EP1 game made for the PS1, so i was eager to try it. It played pretty well, but there were some moments in the game where your player felt limited. Even on the easiest setting, there were parts where they basically set you up to fail. It could get quite frustrating. As for the multiplayer component, it was pretty bad. It all depended on who got the first force push in...
If you can get it for a few bucks, I'd recommend trying it.