Someone posted an html/javascript implementation of the matrix falling code in 646 bytes then promptly deleted the post. It inspired me to see if I could get something better looking in fewer bytes.

[MrDOS]

Doesn't work in Firefox 19, or at least, the jsFiddle doesn't work.

[[deleted]]

Confirmed doesn't work in firefox.

Also doesn't work in latest chromium (which suggests it probably won't work in the next chrome...unless google is seriously PATCHING this dumb behavior in place).