I found this great set of videos comparing knots. Here are a couple classic fishing knots compared. The improved clinch knot and the figure 8 knot.
How strong is the improved clinch knot, a popular knot among anglers. It gets tested one on one vs the figure 8 Knot. North American Fishermans Steve Pennaz tests the knots strength in the Knot Wars competition. For more tips from the Pro's, check out www.fishingclub.com.