Yeah now you mention it the whole thing was extreamly inconsistant. I guess they were showing that he does not like to think of himself as he really is. I mean I don't think Don is portrayed as liking himself.
It's a Czech character, there a cartoon about him but it's all in Czech (or Polish but I don't know that either), I just think he's really cute and a little creepy.
Betty is an anoying charater but I always think no worste then Don morally (though she is very mean to the little girl which puts me off her). I really enjoy how stylosed the show is, I think partly because they always have a different director each season. It's so long until season 6 comes oput on DVD