PT export/hand replayer options

[tansoku]

There's been a couple of .avi's of guys playing posted in the HUSH forum, and while it's cool and all, the file sizes get pretty large rather quickly.
I was wondering if it was possible to export a PT session out into a new database? It could be downloaded and played with the PT replayer.
I would assume the filesize would be smaller than an AVI?
The next thing is how you could do this and see someone multi-tabling, which I suppose is something someone would have to write...
This looks like it will catch on, and a cool little app to replay sessions (from all sites PT supports) would be a great tool.