So far Fallout series included burst lasers, magnetic accelerated (?) plasma projecticles, Gauss' technology, some kind of impossible Tesla coils, sonic waves, mentioned LAER and of course electromagnetic pulse. It's suprising, that most of weapon designs are fairly accurate, considering how they could be developed in the future. Their performance in-game is a bit different matter (i.e. laster-desintegrators or lasers and plasma not dealing fire damage), maybe because devs aren't able to spend more time working on energy weapons, also most of them would be terribly overpowered.
Are any other energy weapons fans out here? What new technologies would you like to see next? IMO shaulder-mounted railgun, some kind of chemical weapon and more Tesla weapons (greandes!) would be great additions, although first one could be too powerfull, if compared to others.