I had a buddy who was an F-111 pilot and on several occasions he mentioned that "there had never been a successful ejection" from the F-111E (I believe). That was the model where the entire front of the aircraft was supposed to separate.
The F-111 had lots of ejections. It had multiple aircraft with ejections while I was at Lakenheath. All of them were successful.
Actually, that’s not true. Here’s one reference to a successful escape module ejection:
http://www.ejectionsite.com/f111restore.htm
I flew in the FB-111 and EF-111 when I was a cadet at the Air Force Academy and the pilots I flew with loved the aircraft. Like another oft-criticized aircraft, the F-4 Phantom, the F-111 was a multi-role aircraft; it wasn’t the best at anything, but pretty damned good at a lot of things.