In addition to a Macbook Air and a Lenovo Thinkpad, I have an Acer One with Linpus, a light version of Linux. I like it quite a bit and it travels with me to check email and backup pictures. It fits in any hotel safety box. Sometimes I've even used it to teach -- OpenOffice is great, opens any MS Office without complain. I also like to use GIMP, a freeware Photoshop-like image editor. One of the best things is that Linux boots and shuts down fast, faster than the Mac and so much faster than Windows.