If I do an intentional WOT run, I'll redline it.
A couple of times each week is not going to hurt anything and is a sort of Italian tune-up.
Just make sure everything is up to temperature and avoid forcing WOT downsifts with an automatic. Ease into it and give the trans an opportunity to downshift at less than WOT.
A hard run to redline through two or three gears really works better with a stick and is one of the perks of driving a stick.
We've had some cars where frequent use of WOT was a necessity, not an option.
Our old Vanagon comes to mind, as do our two 123 diesels, although an old-school diesel has nothing that can be accurately described as a throttle.
In a two lane passing situation, you just put your foot all of the way down after selecting the appropriate gear, since you don't want to linger in the opposing lane any longer than you have to.