I must apologize
During the MARSIS discussion, someone wondered whether MGS could image Mars Express to see if the boom had deployed. I recall thinking that was a nutty suggestion, very doubtful they could target a moving target like that and too small to show anything anyway.
I hearby eat my words.
True, the image isn't detailed enough to see the MARSIS booms, but damn what an accomplishment! It was impressive enough that the MSSS guys built an interplanetary version of Keyhole spy satellite, but they even have anti-satellite capabilities as well! Kudos to Malin & Co.