I've been playing Minecraft for a long time now (since indev) and i have been in love with the modding capabilities in Minecraft and i just wanted to share some things that i use just so i can have some fun with minecraft.
If you're lazy and don't want to install mods and have it possibly crash i would use the auto installers made by Skydaz ( www.skydaz.com/ ) he makes a lot of mod installers and usually has at least 2 a day from what i have seen
it is very useful in my opinion so go and check it out
If you miss playing the old Minecraft MVC lets you change your version from the latest pre-release to indev
Magic-launcher is very useful for people who like to have lots of mods, Magic launcher has a Setup feature letting you enable/disable mods, you can also add Ram to Minecraft which is pretty cool instead of using a .Bat file.
That's all i got right now for things i use a lot as i haven't played Minecraft much as of lately