Earlier this summer I received 94.9 WUPZ mixing in and out with 94.9 WKZC, just 14 miles from my QTH. WUPZ is 167 miles away, but is almost opposite WKZC.
A few years ago, I remember getting 101.5 WJNR mixing with 101.5 WMTE (three miles away, when they were 6kW) one night. And they are almost opposite each other. This summer, with WMTE on a 250W STA, WJNR completely owned 101.5 on the same night that WUPZ mixed in and out with WKZC.
And before 106.3 WMXG went silent, they used to mix with 106.3 WKLA occasionally (WKLA is on the same tower as the aforementioned WKZC).
Semi-locals 96.7 WLXV, 102.7 WMOM, and 107.5 WCCW often get wiped out by WBDK, WRVM, and WDUZ respectively.
Just two days ago, 102.7 WMOM was wiped out by IBOC from 102.9 WHQG, 115 miles away.