There have been many discussions about counting votes with various weighting schemes: self nominated expert (bad), rep (bad bad), rep (again, but not bad?), and several down-vote specific schemes (some good).
What I'm proposing is a flexible and complementary display of a second, optional, weighted vote count besides the current raw "every vote counts" count.
The weighted count is NOT displayed by default for visitors. You have to opt-in from your user prefs, and either choose from one of SO-provided, community-approved schemes, or design your own scheme with some kind of scripting language or raw SQL. (Perhaps then allow multiple weighted counts, since sometimes you're not sure which scheme is the best, or there's simply not a "best" scheme.)
This can also be very valuable to employers as they can design a weighting scheme that fits their criteria for a specific position they're trying to fill.
UPDATE I didn't specify any particular scheme on purpose, but please don't assume I only meant to use rep, which I would oppose myself. Up-vote count on a tag or a "guru" badge, for example, can be a quite reliable measure.