One is what is called a Topsy Turvey cake, or whimsy..the other is just a basic buttercream covered stacked cake, with some fondant accents.
The topsy turvey was a white almond cake (traditional Louisiana wedding cake..although this was a birthday) filled with cream cheese icing and sliced Louisiana strawberries. The other was same cake, buttercream filling and icing, as it was a baby's party.
Hope you enjoy...I enjoyed making them. On my blog are some in process photos if you're into that sort of thing.
Sorry about the quality of the photos, my lens is broken on my Rebel (OMG WAAAAAHHHH, just typing that makes me cringe), so these are iPhone pics.