[daltonlp]

SWFUpload has worked awesomely for me:

http://labb.dev.mammon.se/swfupload/

[benhoyt]

That's pretty sweet! Good link -- I'll keep that in mind. (Though it doesn't do two of the things Paul was after: open a better file-select dialog, and do local data processing on the file before sending it.)

[kingnothing]

Doesn't work in Opera on Ubuntu.