The PAC-MAN sale ends in 25 minutes or so.
While flawed (mainly due to a lack of resolution and graphical options), the PAC-MAN MUSEUM is well worth a look, if you like arcade games.
It's been a while since I played it, and earlier today I re-installed it, and I had a lot of fun with some of the games included.
There's a lot of great stuff in there, like PAC-MAN Championship Edition (probably my favourite game in the series, period; DX+ added a lot of unnecessary crap, while C.E. is pure, unadulterated arcade fun), PAC-Mania (a personal favourite), and "oddities" like PAC-LAND, and PAC-MAN ARRANGEMENT.
Outside of this one, PAC-MAN Championship Edition DX+ is also well worth a look (and, personally, I found it far batter than PAC-MAN Championship Edition 2; many of the additions and changes done for the sequel don't work well, in my opinion).