Suppose I have two images: one a solid blue square and another a yellow. What is the most appropriate way to divide and fill an entire beamer frame with these images? Horizontally (i.e., left half blue right half yellow)? Vertically? (i.e., top half blue bottom half yellow)
This post provides a method, but it involves low-level operations. Another post (can't find the link now) suggests using TikZ.
Is there a third that doesn't involve low-level operations or complicated external packages? I'm confused. I'd think this task wouldn't be all that difficult.

\frame{\includegraphics[width=.5\textwidth}{image1}\includegraphics[width=.5\textwidth}{image2}}? Might not fill the full height, though. – Martin Scharrer Nov 07 '11 at 22:35\usebackgroundtemplatebefore the frame – Marco Nov 07 '11 at 22:39heightparameter? – Marco Nov 08 '11 at 06:58