PC Suite is great! Here is some ideas for exciting things you can do with PC Suite that I have compiled from the various suggestions around the forums:
Remote control WinAMP with Bemused
Streamed audio and video from the net, or from your desktop, or from a Psion wavefinder using WinDAB in server mode (I think - needs a player for MP2 files - does Real or Oplayer support this?), especially, for free over Bluetooth from your PC broadband connection. Thus making your phone a little portable radio/TV set for in the bathroom etc. Does WinAMP have a server mode so you can stream from WinAMP to your phone, AND control it with Bemused?
Sync with syncml servers by installing the remotesync app, and getting a desktop outlook "conduit" like the new syncml version of Intellisync www.pumatech.com
Use it as a live camera streaming video server using pvAuthor from PacketVideo (I think you can do this...)
Connect to the net for free on Bluetooth (and IR) via your broadband connection at home or at work - check and reply to your email, surf the web, chat on instant messaging like MSN or Jabber.
Use it as PPP server for your Palm OS device, allowing you to share your broadband connection over IR or Bluetooth to your Palm - sync avantgo and download email and web browse using PC suite as a server. You can probably even use LANSync on Netwrok HotSync or whatever its called to HotSync over PC Suite - let me know if you get it working. Why would you want this? Because now you don't have to "switch off" your 7650 in properties to get hotsync to notice your palm.
If you have ftp server on your PC, you can use YFTP to send and receive files easily from your PC!
Any other ideas?