Did some counting...
I've done LDJam several times before, but I was unsure how often exactly. So, I looked up Ludum Dare's wiki-page and started checking them off...
Turns out I'm entering my ninth LDJAM this weekend! First time I joined was in april '13 for LD 26 (Minimalistic). Joining for the third jam in a row (40/41/42) equals the 3-jam-streak I had with jams 31/32/33.
Also, I've recently started #1GAM, One Game A Month. So if there's any chance for it, I'll try to squeeze in their Monthly Theme for August - Heat - in as well.