Quote from Mr_You:
Lenovo from what I've read.
People say about other manufacturers that you can just "reinstall", but I've only heard from a couple folks who said the reinstall didn't reinstall the crapware.
Some reinstall packages are a series of disks with all the stuff on them and you don't have a choice but to install all disks.
In Dell's case, the OS disk is separate... as are the other software Dell installs. You don't have to install the "other".. just do the OS, download current drivers off of Dell's support site, and you're all set.