Star Trek: TNG & X-Men: Planet X
Fan wank at its absolute best, Planet X saw the X-Men pulled into the Star Trek universe in novel form. It is probably best remembered for a serious bromance that develops between Wolverine of the X-Men and Worf of the Enterprise, as they spar in the holodecks and just generally get along swimmingly. Picard and Storm have an interesting relationship as well, and the whole thing Is just bizarre and awesomely kitschy. The characterization might not be perfect, but it’s worth checking out if you ever stumbled upon a copy during one of your forays into used book stores.