It's amazing how much stuff installs itself, and adds itself to the startup list, even when you think Win7 stops that.
I run MSCONFIG and Task Manager regularly, to see what's crept back.
Even though I don't use Windows Media Player, wmpnetwk.exe is always there. Often when I'm looking in one of the networked folders, WMP will pop up and ask to play something it's spotted.
There's AppleMobileDeviceService.exe, BBC Iplayer Desktop.exe, GoogleCalendarSync.exe, GoogleUpdate.exe, iTunesHelper.exe, jusched.exe, SearchFilterHost.exe, SearchIndexer.exe, SearchProtocolHost.exe, BM.exe, PAC207 Monitor.exe, CorelIOMonitor.exe, CorelPhotoDownloader.exe, wmdc.exe, mobsync.exe, QTTask.exe, and Acrobat Reader_sl.exe. Then there are about 14 copies of svchost.exe presumably supporting them.
I know what most of them are, and don't think I need them running all the time. I knock them on the head, but they soon sneak back.