I see that
While I don't totally disagree -- it is superficially similar to a shopping recommendation -- I think this question should be allowed, with some caveats. Here is why:
It's a question targetted specifically to people who build their own home theater PCs: htpc. This is a niche, and a clear "power user" niche. The very definition of Super User.
This is no mere garden variety shopping question. It's very, very difficult to find good wireless keyboard / mouse combinations for home theater PCs that don't have some kind of major shortcoming in practice. These tend to be uncommon, rare and specialized. Exactly the kind of obscure item you need expert assistance sourcing from your peers.
I scoured the web looking for good recommendation threads on this and found maybe three credible links, and most of those were already out of date! There simply isn't any good information on this on the internet, which means it passes all the Are Some Questions Too Simple tests with flying colors.
In a nutshell:
"what's the best video card for me?" -- should be closed, with extreme prejudice, of course.
"how do I find obscure hardware item that only the hardest of hard-core computer nuts would care about or even have experience with?" -- probably should be left open, but curated for quality, of course.