It is said the comedy is only funny if the character doesn't "know" he's in a comedy, and Warwick is taking his life really seriously. Utterly desperate for attention, of any kind, he's getting through from day to day, actually broke but pretending to be well off. His "fame" is far in the past, he's out of work, nobody really wants anything to do with him, but he doesn't give up. He's trying to present himself as an important celebrity, or a successful womanizer, but his constructs fail comically.
While other reviewers see a strong connection with The office, I see none, other than they both belong to the same genre. The scripting and the idea of the show are original. Funnier than The office too.