The series is good to watch during initial seasons.
The plot is similar to the Friends series but at times it becomes cumbersome when u realize that they just copying the acts from Friends, though the creator of the show has tried to maintain the uniqueness of the content.
The one person who carries the show on his shoulders is "Barney Stinson", his absence makes the show slow and boring. Also with Ted taking too long to meet his wife makes the audiences loose interest. Overall a good show and a decent Time pass.