The Roly Poly Man.

Private detective Dirk Trent, a collector of cigarette butts, a "smooth" ladies man, a wearer of bad suits, and he's convinced there's more to an incident he caught on tape, where a man seemed about to murder his mistress with an axe. Delving deeper, the film enters some seldom-trodden territory as it slips easily into horror and sci-fi, while still maintaining the hilarious dialogue