High Speed Design Test Equipment Accessories

Accessories are an essential part of making good high speed digital design measurements.  A high end piece of test equipment is not useful if you cannot attach it to what you want to measure with a probe or fixture.  One company that I've discovered that has accessories in stock is Test Path.  They have active and passive scope probes out to high bandwidths, and TDR probes.  It appears that they mainly support Tektronix in the high end equipment area, but they also have many lower speed accessories for other manufacturers.