How about we just retro-fit all of the sharks with frickin' lazer beams on their heads? We could then have a massive mesh laser beam network bouncing off of sharks heads from one side of the Med to the other.

The most important thing to weed out is whether they fit within the mold of the team as a whole. Ask them their personal strengths and how those would translate to your team...have them explain how they can use that knowledge with a younger group. Then find out how much up to speed they are with new technology and buzz. Even an older IT person needs to at LEAST know of newer technology even if they don't know how to implement and use it...their knowledge could help someone younger get through a newer problem or to teach them some discipline in the job or just be there for a paper-clip fight. Their knowledge matters most...then how they can relate it/add it to the TEAM. If THEY can figure out how to make themselves useful within your group that will make them most valuable and most likely to fit in and be an asset to the group. Just make sure you don't land someone that is so set in their way that they argue every point with you...I've had those types too.