Usually I really am not keen on getting these types of frames because they seem to be made of low qualiyt and get old quick, but it turns out Westinghouse made a very nice looking one with some nice resolutions and multiple pics per screen. Its very nice.
Supports:
It also has MosiacView which allows multiple pictures with different transitions and speeds. And it supports almost every type of memorycard not including it has 128MB built in.
Link: Engadget