Yeah, just forget it. I'm going to have to base the relative speeds and ranges off the lasers assumption whether it makes sense or not (and it seems not to in this case), so there's little sense in continuing the arguement. In relation to that, I'd like to thank Kosh for keeping the cutscenes available online in avi format.
Some of you guys who were suggesting that the little glowy green blobs were plasma might enjoy this piece of writing:http://www.stardestroyer.net/Empire/Essays/PlasmaWeapons.html
Alright, some other issues: shields, beams, and subspace.
FS beams (to distinguish them from beam weapons of other scifi) skip FS shields, unlike any other weaponry. FS shields seem to have something to do with FS subspace, but otherwise are poorly defined. They are effective against EM radiation, particle weapons, and projectiles. Higher-frequency radiation seems to be more damaging, as are kinetic impactors.
SW shields use a variety of forcefield effects, and they start at roughly hull level and decrease in intensity as they extend outward. They are useful against EM radiation, particle beams, projectiles, and SW 'lasers'. SW does reference tech they call subspace, and it may have been used for FTL travel before hyperdrives were invented. It is still used for short-range FTL communications.
ST shields aren't terribly consistent about their definition, but may be a suspension of charged particles in a forcefield. They are generally much more effective against EM radiation than against charged particles and unusual forces. ST uses something they call subspace for communications, sensors, and FTL travel, but getting a really consistant definition of this is far worse than anything I've tried to do previously in this thread. FTL travel works looks nothing like that in Freespace.
Some B5 shields are said to be electromagnetic in nature, others are said to be gravitic. Generally they are secondary to armor and only used in any large capacity by the older races. They are most likely based on forcefield effects. Only the Thirdspace aliens were seen to have highly-visible bubble shields like those of FreeSpace and Star Trek.
Since I'm doing a crossover mod, I'm curious what the general Freespace community thinks: can FS beams penetrate the shields of all of these universes? None of them? Some but not others? One big issue is, should we consider the subspace of each of these universes to be the same thing, or are there multiple different things that are coincidentally called subspace? Is B5 hyperspace related to any of these? I'm going to hold my current views back for the moment.