To your and mobileman's lists (I use several of those myself) I'd add:
Originally Posted by JohnH59
Mobile files and MobileFiles Pro - document viewer that supports many file formats (including docx, xlsx, pptx), image files, pdfs, audio files etc. 'Pro' version is new (December 23) and promises editing of Word and PowerPoint files in later releases (Excel editing already there).
1Password. Password manager with more functionality than SplashID (desktop app is Mac only IIRC).
Jaadu VNC. Simple to set up, robust VNC app (Windows and Mac).
NetNewsWire. RSS reader.
eReader. eBook reader.
Weather Pro. Detailed forecasts, satellite, radar, great UI.
WunderRadio. Internet radio app that supports multiple stream formats and links to the radiotime.com station listings.
My Football. Live scores, previous results, league tables, club information etc for most European football leagues.
Super Monkey Ball. Gorgeous, challenging, addictive game.
BBC iPlayer. Web app useful only in the UK. Watch or listen to almost any BBC TV or radio program from the past week.
I'd be happy to see all of those on the Pre. I'm guessing though that a graphically-rich app like Monkey Ball wouldn't be possible unless/until Palm lets developers get fuller access to the OS.