On Stack Overflow, there is no option to show only favorite tags. The reason for that is given here:
We believe that browsing by tag, and tag combination, should be sufficient. The bleedthrough and forced exposure to other topics is intentional; we believe programmers have more in common across languages and disciplines than they think they do. We don't want to create more "ghettos" where programmers only care about or look at certain pet topics.
Good programmers are well-rounded, and are aware of the world outside their "special preferred" tag.
That reasoning doesn't hold up so well on Gaming. If I'm really into, say, Fallout: New Vegas, it's not going to help me "develop my craft" to see questions about World of Warcraft. It'll be a lot easier for me — and, I think, everyone else — to list a few games I am interested in than to list every single game I'm not interested in. Fortunately, since we tag with game names here, this comes down to a tag handling tweak. Can we get a "show only favorite tags" feature to supplement the "hide ignored tags" feature?
And yes, I know, as an engine-related question, this really belongs on Meta Stack Overflow, but I thought I'd gauge interest here before I brought it up there.