Today’s tip you’ve probably tried on your own, just in hopes that it would work. But just in case you never thought about it, like in the Solution Explorer (which works btw, and i’m still singing my tip of the day songs), yes, the Object Browser supports type-ahead selection.
Back in the 2003 days, I was on a quest for a while to have all lists in Visual Studio support type-ahead selection. I did what I could, so if you see a list that should support it and it doesn’t, definitely file a bug in Connect. Maybe one day my quest will be completed.