I do have a small video ready (without commentary), demonstrating one aspect of the upcoming spreadwallet.
What happens in the video:
The spreadwallet will connect with 5 altcoins simultaneously (SPR, BTC, LTC, PPC and EMC) through "SPV connections".
(TCPSockets that connect with full nodes of these coins and ask for headers through the getheaders message)
As the blocks are downloaded and become available within the wallet I visualize them in real time.
Enjoy!
(click picture to open vimeo)

Will have more updates ready soon.
EDIT: BTW sorry for the crappy video quality, this can be done much better.... but I was in a hurry.