Oh and I loved it when a opponent would shoot their Plasma guns at my Avatar not knowing that he was immune to them.
Oh and the ability for Orks to custom make their own weapons.
Once ended up with a large blast template weapon that froze everyone solid to include the shooter because the range was shorter than the blast template.
Oh the joy of shooting your Ork Shokk Attack gun and having the little buggers end up inside the armor of the terminators that you were shooting.
Say what you will about 2nd Edition - but it sure was fun with all the crazy things that could happen.
Like the time I toss a Rad Grenade into the building that had a squad of Blood Axe Commando's and it ended up with a 3" blast radius but only being 2-3 strength. It did cause them to break and since they were in the building they had to go to ground.
Took a very long time for them to die because due to the Grenade I wasn't going in after them with my Harlequins and due to it low strength it was hard to wound the Orks.
The real fun Grenade was the Plasma Grenade since if had the ability to expand to 18". Got lucky once with that and destroyed a sizeable portion of a Genestealer army.
Another fun bit of fun was the Eldar D-Cannon and the Displacement Chart. You never knew where the model that you hit would end up.