I always thought it was pretty hack to be honest. Not the worst sit-com by most measure. The most over-rated though. It doesn't have any real jokes or gags and is completely laugh track dependent. It just tells us when we are supposed to laugh. The characters themselves are so insultingly cliche too. The typical self hating Jew, the insecure nerd with mommy issues, the goofy foreigner, don't get me started on Sheldon, the anti-intellectual but savy dumb blonde. The repeat those characters with opposite genitals.
I'm being harsh here and overly critical. I know I'm raining on parades and people really like this show. Maybe I'm being a douche trying to ruin it for them.