Whenever I come across a green-screen ATM running decent old software I practically leap for joy. Why? I can get my money in 5 seconds. The new ones, that I guess are running Flash on top of MSIE on top of WinXP, are unbelievably slow.
My favorite are the ones where the developer got the resolution of the screen wrong, and both the horizontal & vertical scrollbars are present. The touch screen is emulating a mouse, so you can drag the bars a little ways.