The second edition of Caylus is out - they've got real coin tokens now, instead of the bozo stuff that wen out with the first edition. In that printing, the coins were all the same color, there were no printed numerals, and the way to differentiate fives from ones was size. Ick.
More importantly, we played a game last night and I didn't bring up the rear - I won. It took me awhile to get a feel for the game, but in the late middle of the game you really have to have progressed up the building favor chart and acquired gold - so that you can build one of the big blue buildings. Along the way, of course, you have to have built at least one green building.
It's a very cool game, but it does take longer to play than Puerto Rico. There's more good news too - it looks like you can play on BrettSpielWelt now. Cool.