If I am in the middle of the function, I would like go to the very end of it in vim. I run into this problem as we sometimes have function of 500+ lines long (don't ask why).
I use vim, gvim.
You can use the "]}" command. You may have to repeat it depending on how nested you are.
][ goes to the next '}' in the first column.
:help 29.3 to find out more about moving through a program.