Captains that just introduces themselves and not their FO's.

Also, the Sure jet pilot who I heard over the radio.

Cleveland centre: Acey 1234 contact approach at 119.35..
Few minutes later..... Acey 1234 contact approach at 119.35
........few minutes pass by.... Acey, Cleveland centre you with me?

Acey: approach at 119.35, sorry I was on the other line.....


Seriously, grow up!