Since I've started doing shtayim mikra v'echad targum (reading the parsha twice, followed by reading targum Onkelos), I always start out by checking out how many p'sukim I have this week. It's like my own little s'gula. Parshas Ha'azinu only has 52 p'sukim, so the first time through I thought, "Whew... this will be a snap!" Once I started, of course, I found that it is comprised almost entirely of words that were even too hard for the Navi'im. Oh yes, and it's poetry, so even reading any of the various English translations doesn't help much. Then there is are teacher, Rashi. Rashi in uncharacteristically expansive; another indication that you are in for quite a ride. And then... then... as you near the end of the parsha, you see way more Rashi than can possibly be "p'shat" in the remaining p'sukim. As it turns out, that is correct. Rashi springs on you that even the tanaim had issues with Ha'azinu; leaving...
This is a paraphrase of the pasuk in t'hillim 84:7 -- "mei'chayil el chayil" -- which means "from strength to strength". In this case, it is my thoughts and ideas to those who are strong enough to be interested :)