From Charleston, SC (just outside of it, on James Island)
610: Not much, but a mix of Spanish, Miami (maybe), and probably two or three other stations
620: Mix of Spanish, WDAE (especially during twilight hours), and WRJZ
630: WBMQ fair from Savannah, but much weaker since they dropped some of their night power
640: Spanish usually, sometimes WGST, maybe WFNC
650: WSM, strong signal usually (even that sometimes mixes with Spanish)
660: WFAN, at varying strengths (during twilight, usually WLFJ)
670: Almost always Cuba/Miami (WSCR only comes in if you turn the antenna, fade the Cubans out)
680: WPTF (one of my strongest clear channels)
690: WOKV most of the time, much weaker than during the day (when it blasts in, all the way to Myrtle Beach and Wilmington), WSPZ often comes in during twilight hours :

700: WLW usually, but even that gets interference here by Spanish stations.
710: A mix, usually a fair WOR, but Spanish mostly
720: WGN most nights, but also mixes with Spanish stations
730: Strangely, after my local 730 went off the air, I can get the little 1000 watt sports station out of Memphis, KQPN, weakly, but it comes in, because there is nothing else strong of note in the entire SE ;D.
740: CHWO most of the time, dependable, even during summer
750: WSB, of course, usually strong, comes in during day in the winter
760: WJR, a pretty good signal, actually, even with the distance involved, very little interference from others
770: WABC most of the time, WLWL comes in during twilight.
780: WBBM fair/strong almost every night (small amount of Spanish interference)
790: A mix of signals, but usually WNIS, with a rare WQXI, and sometimes WVCD
800: CKLW/Spanish, mixed together many nights, not as strong as WJR