I always liked this one. The chase after the nickel gets more and more harried. Eugene Troobnick as Arnie is quite good but the real scene stealer is Victor Buono as Eric Damian! He's always great in everything he turns up in. Hammy perhaps but that's his trademark. Doesn't McGarrett call him a "fat cat"? LOL. To me he's part fat cat, part sly fox. His scenes with McGarrett are priceless! He's so oily and transparent that McGarrett can't even keep a straight face talking to him. The ending with the coin hidden behind the ear was perhaps a bit forced (how did McGarrett know?) but it was fun, in keeping with the episode. This featured the second music score by Bruce Broughton (after "The Finishing Touch") and he was actually Emmy nominated for this one! Season 6 actually had a record 3 nominations for best dramatic score - this one, Don Ray's "Nightmare in Blue", and of course Morton Steven's "Hookman" which won the Emmy.