I'm not counting rereleases like Banjo-Kazooie / Tooie or Conker: L&R.
Kameo, it's among my favourite games last gen, it has great level design, varied and intriguing gameplay and an incredible musical score. Kameo is a real classic. I also liked Nuts & Bolts (not as a Banjo though!) and Grabbed by the Ghoulies. Also, Viva Pinata was incredibly well made, considering I abhore the simulation genre and still got quite a bit of fun out of those games. Easily better than all Sims and Animal Crossing games. I didn't like Perfect Dark Zero, but I don't like shooters anyway, so PDZ just joins the ranks of Perfect Dark, GoldenEye and Jet Force Gemini of games of absolutely no use for me. Kinect Sports was better than Wii Sports and was the only game to beat Wii Sports in its field, however, it, again, is from a genre I don't like. So had I been more lucky with genre choice (no simulations, sports or shooter games, my three no-go genres), I would probably have been quite happy with Rare.