Although this isn't at all recent, one of my best DX catches of my lifetime occurred when I was a teenage kid home from school "sick." I guess I wasn't that sick, since I found my way downstairs to my parents' basement where my hamshack was, and tuned around 20m SSB in the afternoon. Heard a CQ from AC5A, and nobody answering him. This is way before an AC5 could be some guy in Texas. In the 60s there were only W5s, K5s, WA5s and WB5s. And WN5s in the CW bands. I had no idea what AC5 was, but the guy sounded lonely so I answered him with my mighty Marauder (100W PEP) and dipole. Easy QSO. I asked where he was and he kept telling me but I never heard of the place and couldn't figure it out. Bhutan. He QSL'd also. I had Bhutan confirmed before I had Finland confirmed.