I don't either -- I run them in portrait. (But 16:9 is too narrow for even that. And it doesn't work on a laptop, of course, but that seems more constrained by keyboard shape, too.)
I wouldn't do serious programming work on a laptop, either.
It's nice for doing an hour of two of coding at home or a little sysadmin work, but for extended sessions I really appreciate a top-of-the-line desktop machine with multiple monitors.
