Laptop replacement for desktop

Can anyone offer advice on the following ....
I want a laptop to replace my desktop computer. It needs to be portable for holidays/weekends away but primarily I want to use it connected to my HD TV in the lounge along with a wireless keyboard/trackball rather than as a stand alone laptop. I will use it to surf, emails, ms office, play bluray discs and work on my digital photos and videos. I don't play games. So must have HDMI connection and suitable drive. Want to be able to use laptop in "closed position" connected to TV - is this possible?
Which make/model/spec would you recommend?
Thanks in anticipation of your help