"You Must Remember This" is one of those unobtrusive episodes of television, without a polarizing subject matter or anything too annoying. The plot about two sisters, one of whom remembers everyone, is fine but nothing special. The subplots have some charm, but aren't outrageously funny.
House pokes around to get Wilson out there after breaking up with Sam (which was totally random), and succeeds until Wilson backs out. Well, he's got the cat.
Foreman and Taub living together... yeah, I'll hold judgment for now. Individually, they might not be interesting or worthy of the audience caring for them, but together there may be a synergy that makes them awesome characters. Or they can much, much worse.
Score: 8.6/10