I'm not entirely sure if I have shared this story yet, but the PCH hangout, first seen during the White Castle episode, is actually on the lot that Veronica Mars films on. If you look above Thumper's hea, that is the same place as the picture below. In fact if you look closely when they are filming in the lunch area, you may even be albe to see the structure below.
Some decent episodes are airing tonight with the Winter Carnaval with the great scene with Veronica going "Tah-Da" after getting the one dude to confess. The second one is noteworthy just because the chick from Laguna Beach shows up as a lesbian, which ranks very high on the unintentional comedy scale.