We don’t mean that in the Charlie Sheen sense either, because to our knowledge John Elway hasn’t watched Megan Fox clean windows recently. But if that happened, the Broncos would definitely be winning March.

After signing some dude named Manning who’s pretty good at throwing a spiral, the Broncos significantly upgraded their secondary by signing Tracy Porter last night, and he’ll now play opposite Champ Bailey. Then wide receiver Andre Caldwell was signed to provide a veteran presence to replace Eddie Royal, and guide Eric Decker and Demaryius Thomas.

The flurry of signings is motivated by the need to get as much value as possible from a substantial investment in Manning, and that continued today when tight end Joel Dreessen was signed to replace Daniel Fells. A consistent contributor for the Texans both behind Owen Daniels as his backup, and when Daniels missed 18 games over the past three seasons with various injuries, Dreessen now becomes the Dallas Clark in Manning’s offense.

In limited opportunities he’s posted solid numbers, with 518 receiving yards in 2010 on 14.4 yards per catch, and a career-high six touchdown catches last year. The swift signing of fresh targets for Manning likely won’t end at Dreessen either, with Jason La Canfora reporting that the Broncos are still negotiating with Jacob Tamme.

A fear for Manning and his health in Denver was the lack of an experienced supporting cast among his receiving targets. With Caldwell and Dreessen signed and Tamme likely on the way, that concern is quickly evaporating.

UPDATE: The Broncos have now made Tamme’s signing official, lining up a solid tight end tandem for Manning. Tamme signed a three-year deal worth $9 million, while Dreessen also signed on for three years, and his contract is worth $8.5 million. Two bargain signings for great value in the second tier of free agency.