Might take a look at Grid 2. Missed the first one but it still gets high praise from players.
Otherwise... I think I'll just play the odd single-player game once in a while
Yes Smrt, Grid 1 was very good and Grid 2 will probably be great as well.
LittleBigPlanet: Karting! Just picked it up today and am loving it. The controls are so easy and the tracks are great fun ... anyone could win online, so it's not a game to play seriously, although I'm already trying to go as fast as I possibly can haha ... but it only lasts until you get blown up by someone from behind. The drifting is fairly easy too (which is how you get round the track quickly) ... easier than MarioKart Wii anyway.
What I love most is that they've obviously thought that none of the kids will read the dialogue and will skip ahead, because there are little jokes in there that kids just wouldn't get haha. I also like being able to take a default vehicle design, such as a pirate ship, then being able to turn it into 1 of 6 given categories: Standard, Low Rider, Monster Truck, Dragster, Hovercraft or Tank haha. I saw one guy online, cosily drifting round corners in his floating crocodile's mouth haha, looks so cool.
Having a good laugh with this game anyway ... but easy to play ... anyone could win once you start mastering the lines and drifting.