Many would say that a humorous comic found in the newspaper or, in this case, online is dependent on great writing to succeed in delivery most of the time.  In fact, I would go as far as to say that as long as you have a picture in your head of the environment of two people carrying on in conversation, the copy would be enough to procure a reaction of laughter.  I have found there are a select few of these comics online that boast some amazing writing.

One such comic would be the recently discovered Cat and Girl.  The thick, pensive dialogue is sardonically proclaimed from the mouth of a cynical, sarcastic girl who never refrains from sharing her critique of pop culture through items such as ringtones and Wikipedia.  Her most common form of communication found through monologues that perfectly reflect the contemptuous, pessimistic attitude of this generation, of course, in a humorous fashion.

In the same derisive form, Penny Arcade focuses its analytical tongue towards videogames.  While the writer for this comic provides excellent dialogue between two malicious gamers (or often a satirical view of videogame company executives), his most impressive writing is found in the blog that shadows each comic.  A dictionary necessary for any review of his blogging work, you would easily forget you were reading a review for a videogame.  An ironic image to be sure, a gamer with the gift of gab.

For fear of copyright (no pun intended) infringement, I could not post an image of the comics discussed in this forum, but I will provide information necessary to read them yourself.