Those uses are not all that taxing on a laptop.
You probably want a good screen (anti glare) and long battery life.
Beyond that perhaps something a little more rugged than average because of the rigors of daily carry.
That's going to put you into a business model, or the more durable consumer models.
I want a small laptop for:
Need DVD Player to play movies
Downloading tv programs and watching them during my commute (I love HBO & Showtime series but hate paying for premium channels-any suggestions on downloading those programs-I never watch their movies)
Downloading itunes for transferring my music and audiobooks to my ipod (have a portable hard drive to back up my music that I can attach)
Want lightness and portability and connectivity.
Please make suggestions. Thanks!