AppBrain is a 3rd party website / app combination that tries to enhance the android AppMarket experience.
Pros
- lets the user queue up installations / uninstalls from a great web interface
- lets you browse the market from a desktop browser with all the goodies that means, multiple tabs, proper keyboard, copy paste etc.
Cons
- still requires clicking multiple items and confirmation dialogs on device ( android 1.6 ) for each application install
- still requires manual upgrade for items ( android 1.6 )
I suspect that with 2.2 the cons might go away, but even on 1.6 this is a good improvement over using the standard device only market interface.