Finishing the basement just got simpler, thanks to interlocking EPS foam panels that clip right onto concrete walls, sparing you the chore of installing stud walls and vapor barriers. Top it with drywall to meet fire codes. Refit Interior Energy-Efficient Finishing System, by Arxx; about $1.85 per square foot; refiticf.com thisoldhouse.com | from The TOH Top 100: Best New Home Products 2011
Wahoo Walls is a basement finishing paneling system. It is water and fire resistant, supposedly has an insulation value of R13, and takes care of 4 of the most brutal steps of DIY basement finishing (framing, insulation, drywall hanging and mudding) in one step. It's paintable and doesn't have the ugly seams that many basement finishing systems do.