Whats your favorite distro for use with Laptops?

My favs for laptops are Slackware Linux and Sorcerer Linux.

Slackware, and not only for laptops :P

I like fedora. most of my personal use machines (personally owned and business) both laptops and workstations have all been at least dual boot between windows and Fedora.

Ubuntu 10.04 LTS with Google Chrome works great for me!

Ubuntu 10.04 on both laptop and desktop (Dell Vostro 1400/Dell GX620).. Had previously been on Ubuntu 8.04, but did a clean install on new drives for both when 10.04 was released.. Have tried Mint,Mepis and even Debian itself, but came back to Ubuntu.. I've been using Linux since 1993, with Slackware. Later moved to Redhat, then Fedora, then a friend pointed me at the new Ubuntu back in 2007, and I've been using it since 7.04...

Ubuntu 10.04 on an HP Pavilion DV9000 series and HP Pavilion DV4000 series laptops. Ubuntu was the easiest to configure for wireless (WPA2) encryption. Prior to this, I used Mepis 7, which was also very easy to set up, but after a failed upgrade to Mepis 8, I decided to go with Ubuntu 9.04 and have been using Ubuntu ever since.

Slackware, Slackware, Slackware. :)

On occasion, mind you, I will run OpenBSD.

I installed Ubuntu 8.04 on an old Dell with 384MB of system memory when that machine had become a knuckle dragger running XP with anti virus, firewall etc. With Ubuntu it ran very pleasingly quickly. Since then I have accumulated two more "old" laptops with Ubuntu installations. Beginning with 9.04 configuration of wireless became very simple. I even keep Ubuntu 10.04 on my new Sony in a dual boot with Win 7. Since I can use and modify all of the files in the Win 7 partition without leaving Linux, I rarely boot to Win 7.

I think openSuse is also worth considering, either the KDE or Gnome variants. openSuse 11.3 Gnome runs beautifully on my Asus EeePC 701 4gig netbook,and wireless is easy. If it can run like it does on a Celeron ~663 mhz first generation netbook with 1 gig of ram, imagine it on a full laptop. Also, since openSuse will feed into the next commercial business version Suse Linux Enterprise Desktop, it simply has to run on laptops, or else businesses will not buy it. Just my 2 cents from Guelph, Ontario. :)

I use Suse Linux. It is on a netbook, laptop and quad core desktop. Nice and easy to install and use and if you need to you can get the Enterprise version that is pay for.