On that note I saw my first real 360 ad yesterday. It has a montage of table tennis, fight night, tomb raider and a bunch of other games, then ended with "Over 70 games for you to enjoy" something like that, and the 70 was a counter that kept going up.
Pretty cool add, really showcases pure graphics, and I think the Tomb Raider inclusion is a good push, here's a high profile franchise, that turned out pretty well scoring ~8.5 on average, and it's an early summer release. They should be pushing that hard, the GFX can look really nice at times.
It's interesting to note that 360's sales have come with a nearly non-existent marketing campaign. Compared to XBOX1 where I saw Bloodwake commercials aon TV 8 times a day every single day. I think a strong marketing push could work wonders for moving them through the summer months.