"Monty Python's Flying Circus" premiered this day in 1974. It featured a wacky troupe that could turn anything average into the ridiculous -- with hilarious results. Same goes for the do-it-yourself handyman who sometimes sees a perfectly normal project escalate into a fiasco of epic proportions due to innocent oversights and simple miscalculations. A good example is pattern and template goofs. Whether on a big or small scale, such goofs are embarrassing and sometimes costly. What happens is you meticulously measure and trace, and then transfer your pattern to your material carefully following each zig, zag and curve, and trimming out all nooks and crannies. This creates a perfect match with no variation. But then your item doesn't fit. Whether it's a roll of vinyl sheet goods for flooring or an intricate piece of woodwork, the problem may be the same; you flipped the pattern and trimmed things upside-down. While we hate to admit it, we've all done it. The moral is you've got to know which side goes up. mark it! And that's the On The House Tip for today.