A few winters ago, I attempted a fancy shmancy cake featured in Bon Appetit magazine. It was tons of work including making your own caramel which you folded into the whipped cream. During transportation, the cake fell over and even when I reconstructed it, it didn't want to stay together (we ended up shoving a big candle through the layers to stabilize it).
Speaking of cakes, ATC Quarterly's winter issue will feature artist trading cards with the theme "Let Them Eat Cake." Check out the website: ATC Quarterly and click on "Centre spread" to see last issue's challenge. Send me an ATC with your interpretation of "Let Them Eat Cake." Deadline is November 15/07.