Yeah. 
You can use this to check for other combinations that may or may not work: http://ourl.ca/7652/133708
Not what I meant, actually. With no other keys pressed, Enter will sometimes imitate Down. With no other keys pressed. Read the previous sentence about 100 times.

I will pass along the source next time I figure it out, or if you think you can decompile a program I noticed had the glitch I'll post that.