my parents also love the wii, my dad espeacially he loves tennis. im taking my wii to my grandparents tommorow, im pretty sure they will love it. my aunt and uncle said they want to buy it. they will also be trying it tommorow.
Im sure they wont be dissapointed!
My Uncle and Auntie recently bought one... they are in their late 40's. My Uncle has had two heartattacks in the last 18 months due to bad health and the only physical exercise outside of walking I have ever seen him do is play bowling on the Wii. One night I went over there with my cousin and they kicked my ass at bowling, embarassing! haha :P
What i've got so far: Wii, Wii Sports, Wii Play, LoZ: TP, Marvel: UA, Rampage: Total Destruction, WSOP: ToC, Excite Truck, TMNT Wiimote x2, Nunchuck x2, Classic Controller, Fan/Neon Lights, Wiimote Charger, Skins - Blue, Black, Pink, Green, Component Cables, Trial Opera Browser & Classic Games: DK Country, SimCity, Super Mario Bros., Kid Icarus, Super Mario World, Street Figher II, Castlevania IV, Zelda: LttP