Some laptops will have S-Video output. Some will have DVI. Some will have VGA. Some will have nothing. If S-Video then you can play that on almost any TV with little effort. If it's DVI you can play that across DVI/HDMI enabled TVs easily. You can connect that on any TV though if you buy a converter. Not cheap usually.
If all you have is VGA then you can convert that to DVI/HDMI or component with a converter too.
S-Videa and composite video looks like crap. I remember hooking up the old Commodore 64 to the huge wooden Zenith Console with the old RF connections. You had to wiggle the cable and position it just right to keep the all the artifacts and scan lines off the screen. It's hard to believe that a lot of TV's have VGA and DVI connectors now.