This mod allows you to kill groups of identical mobs with a single blow. Hold down the ~ (tilde) key (this can be changed in the control settings) and hit any mob – all mobs of the same type within a 2-block radius will receive the same damage.
beeeye (Bi-eye) adds true stereo rendering to Minecraft by rendering separate left and right eye views — real 3D, side by side, SBS. And head tracking ofcourse!