Wii Tennis is the best of the games, I think, but I'm now pretty addicted to Zelda. I don't think mum views Link as quite the evil little bastard Namco made him in Soul Calibur, but she's still a trifle wary of him. Me, I tend to resort to "you pointy eared idiot!" when he falls off something he really wasn't supposed to.
But he's cute, so I can't be angry for long.
Midnas is adorable. Squidgy-cute. Even her uppity attitude is sweet - the only weird thing is that she reminds me wholly too much of Wrath from FullMetal Alchemist.
Wolf-Link is a little nicer to use than Elf-Link though, the dash option is nifty. But Epona is all kinds of love.