I started binge watching medical dramas over the summer and decided I should watch ER. I have only vague memories of reruns that aired when I was young, so I figured I should at least watch the first few seasons with the original cast. I'm on season 4 now and sad that this is Clooney's last. There are some really great episodes and it has been a treat to watch. Soooo many cameos from people before they were famous. There's an episode with Ewan McGregor holding up a convenience store which is excellent!
My fiancee looooooooves this show. I've enjoyed what I've seen alongside her. Someday I'll have to give it a full watch.
Currently on season 8. I watch this every day when I should be catching up on something more current. It's just so comfortable and easy. I could recommend some standout episodes.