Forgetting Windows password is the most annoying thing. Not only because you know you can reset your Windows password and recover access but also because you are going to need another pc to burn a Linux live CD / USB drive (if you don't have one).
Having a good WiFi signal everywhere is mandatory for me. You need to have WiFi everywhere in you apartment even in the bathroom. Yes especially there! You browse your favorite blog, listen to your favorite music and do lots of other “creative” things
There are situations where you need to start your Linux machine automatically. For example when you ‘re using your machine as a server (Web/Samba/Email/Ftp/etc.) then you’ll need your Linux machine to start up automatically at the morning.
Sometimes the simplest solutions are the best. If you feel sometimes the urge to setup an alarm that will notify you for just about anything, then you can create it very simple from your windows 7 environment, and without any extra software.