Love the idea of this. I know some bakers do cream cheese fillings. I've also heard of mascarpone cheese fillings. Anybody has had a combo with some cheese-based filling?

Demyful once posted a description of cake she was considering from Fleur de Lisa bakery in the Bay Area:

Victorian Vanilla cake filled with white chocolate, cream cheese and strawberr ies

YUM!

PS. This group makes me hungry.