Update two columns with one UPDATE command

We've been getting a number of questions like this recently. On the surface they seem simple. After digging into them for a while, they still seem simple.

Do all of you have a copy of your SQL Reference manual? Every major database system, whether proprietary or open source, has a manual which you can browse for free on the Web.

update daTable
   set Column1 = 9
     , Column2 = 37
 where Foo = 'Bar'

That wasn't so hard, was it.