Example 1: Multiple Cutouts for Multiple Sources
Example 2: Which investigators used XMM to observe my favorite sources?
Example 3: Checking what photometry NED has for a set of sources
Example 4: Discover, take subset, Match against EUVE and ROSAT catalogs
Example 5: A color-color-color Plot from the Join of GSC and USNO-B
Example 6: NVO Inventory Services