In a bid to give the critically adored and ratings-troubled Veronica Mars a shot in the Nielsens, CBS has agreed to air four episodes of sister network UPN's series. CBS will offer up a double-header of Mars repeats on July 29 starting at 8pm/ET, and two more eps on Aug. 5 and 12, Variety reports. Mars is slated to make its second-season debut on Sept. 21, on UPN. I tell you, CBS, something like this almost makes up for Center of the Universe. Almost.