Disowned Adaptation: For unexplained reasons, John Lasseter is not a fan of the cartoon series.
Exiled from Continuity: Per word of Aaron Sparrow, Pixar has barred elements from this series from being used in other Toy Story media (to the point where they're not allowed to even acknowledge the existence of the Buzz Lightyear cartoon in universe), apparently due to John Lasseter's dislike of the series.
Keep Circulating the Tapes: Only Buzz Lightyear: The Adventure Begins is out on VHS and DVD. The rest of the series is unaccounted for, except for one episode, "The Planet of the Lost," which is on a VHS so rare that it usually goes for up to $70 on eBay (it was presumably included in select Buzz Lightyear toys during the 2003 holiday season).
Missing Episode: When the series was rerun on Disney Channel and Toon Disney, "Inside Job," "Conspiracy" and "Super Nova" were left off the schedule. (The first two dealt with terrorist assassination plots, which is taboo since 9/11, and the third dealt with substance abuse.)
The Other Darrin/The Other Marty: In The Adventure Begins, Tim Allen reprises the role of Buzz. For the series proper, however, Patrick Warburton took over. (In The Adventure Begins, Buzz was voiced by Warburton to begin with, but for the DTV release, Warburton's lines were redubbed by Allen. When it was re-cut into three regular episodes, Warburton's lines for Buzz were used in order to remain consistent with the rest of the series.)
Depending on the episode, XR is voiced either by Larry Miller or Neil Flynn.