XaVIX was out ages before the wii was probably even thought of (shown off at CES 2004). If anything the Wii is a XaVIX ripoff.
I don't own one of those, but I do own Kensin Dragon Quest which uses the Xavix technology. Also, the sequel to said game is coming out on the Wii.
Since when is Jackie Chan known for boxing? I ask you. BTW I tried one of those once. Mediocre is how I describe it.
It is a fairly average system but was fun for a few minutes although in the UK they went way off to make it a interactive TV system (and in no way a games console) with aerobics type games, sorry interactive TV units. ¬_¬ Xavix have licenced their technology out to a number of companies including Bandai who made the mini two arcade game units. Composite video, arrrgh...