I only recall two of them, my grandmother on my mom's side intimidated me. For my grandmother, I don't think she liked kids, and most of my memories of her are of trying not to anger her. My grandfather on my Dad's side, was a nice guy, but also quiet. He was an engineer that worked on bridges, and lived on the other side of the country - he was a really interesting guy, but I rarely had a chance to hang out with him. He lived quite a long time too, into his 90s and probably would have lived longer if he had not fell in the bathroom and broke his neck. I never had a chance to have any deep discussions, or get any advice from him, which is a shame. He was always nice to us though.
Most of the time that I recall seeing my grandmother, was at family events. We would usually go to her home, and meet up with a bunch of relatives. I didn't really like it though. I had a pretty cool great uncle though, he was her brother and he would always give us money when we saw him. Her sister was pretty cool too, she lived for a really long time.
Toward the end of my grandmother's life, she moved into our house, and I did my best to avoid her. One night though, my brother and I snuck into the kitchen in the middle of the night, to grab some cookies on the top of the fridge. They were in a ceramic cookie jar, and while grabbing them it fell off the fridge and shattered.. It woke everyone in the house, and she being on the first floor was the first to arrive. Holy **** was she pissed, she looked at me like she wanted to throw me down a flight of stairs I was standing next to, that lady hated us with a passion that night. I am not sure I would still be alive, if it were not for my parents arriving shortly after her. You have to understand though, we were still just kids.. she was a pretty viscous lady that used to beat my mother silly, and held no reservations about doing the same to us. The way she would look at us, even before the cookie jar incident, was pretty scary. I don't think she wanted us around at all.
For years after the cookie jar incident though, there was a small tear in the linoleum floor that I am pretty confident was from the cookie jar.. that thing was heavy, and when it fell - damn it made one hell of a noise.
Needless to say, when she passed away, I did not feel sad. Not for her anyway, I felt terrible for my mother, and pretended to be sad because I did not want to trivialize her loss.