How I met your mother has completely lost it. Seriously, this is the worst season ever. No matter how "cool" you are, how can you give tips to your friend about your ex-girlfriend's love spots and then act all affectionate towards her at the same time. This is what happens when you try to copy a great show i.e "Friends".
The sensitivity with which the Ross-Rachel-Joey angle in Frineds was handled was amazing. But I can't say the same for HIMYM in which Barney actually high fives Ted for ***king Robin in different poses.
Another problem I have with HIMYM is with Jason Segel's character. If anyone has watched his "I Love You, Man", they know that he is brilliant versatile actor and they are absolutely wasting him in HIMYM where he is only reduced to say stupid mushy dialogs with lily. It gets so annoying after a while.
The Big Bang Theory on the other hand is still awesome. Granted, that not all episodes are great but they manage to make me laugh nonetheless.
I don't even bother with Heroes now a days. But its like Prison Break, you know its getting worse but you would still watch it anyways because you have invested a lot of time in getting attached to the show. The only reason why I watch Heroes is because I am familiar with the show and its characters and because I once loved it (Season 1). I seriously hope they end it after this season.