Someone on the original forums started a thread, asking what the worst powerset combinations could be. A lot of people suggested Rad/Energy (defender), because all of the knockback would make Rad's debuffs pointless. So, of course, I had to make one. Not surprisingly, fun. I had her up to the high 20's or low 30's and logged in to burn a respec (i forget why), expecting to log out again after running a couple of test missions. Before I made it to the door of the first mission, I receive a /tell asking for help. One mission is as good as another for testing out tweaks, so I consented and accepted the subsequent invitation.
Turns out to be a full team. With the difficulty maxed. When I enter the mission, they're all standing together, near a room they haven't cleared yet. I peer in... Freakshow. A whole lot of purple-con Freakshow. I pop AM, pan the camera around and wait a few seconds with my fingers hovering over the number keys. And a few more seconds pass. Then a full minute. Tick tock, tick tock. AM expires, I refresh the buff, and still nothing. Finally, I ask who's tanking. They don't know. They're on Vent, trying to decide. Also trying to decide whether to boot me and go looking for a "healer".
Well, that was the end of my patience. I buff the team again, then run into the room and start unloading with everything I have. I've got Freaks bouncing and flying all over the place. By the time the rest of the team realizes I'm not meekly awaiting their decision as to my fate, I've aggroed the entire room and have half of the Freaks pinned in one corner, juggling them with KB, the other half standing on my head with RI on one of the bosses. The rest of Team Chucklehead finally remembers that I was there, and start coming in to "rescue" me. Then they notice my full HP bar and actually start attacking.
I stayed and helped them finish the mission. The only deaths were due to the Fire/whocares blaster, the team leader who set the difficulty so high and refused to reduce it in spite of the problems his team had encountered (he was +3 to the next highest level in the team, so everything was at least +6 to everyone else). He ran ahead of the rest of the team and tried to nuke. Three times. Died every time, before his nuke activated. Then he quit the team and logged out. And I made seven friends.
From then on, my favorite tank has been the one who gets in there and tanks. My favorite tank is the one who's confident enough to do his/her job without making the team wait ten minutes. Not brash, not foolhardy, not stupid and reckless, but also not timid. Let the buffers do their job, then get your ass in there and do yours and I'm happy.