I feel much the same about songwriting, Songbob. There are times when the stuff just pours out and times when the well seems to go dry.

The albums that I feel are Bob's strongest are:

The Freewheelin' Bob Dylan
Bringing It All Back Home (which is a masterpiece)
Highway 61 Revisited
Blonde on Blonde
Blood On The Tracks (another masterpiece)
Street Legal (undervalued by many people)
Infidels (though he could have picked some stronger songs from the same period which he left off the album, such as "Blind Willie McTell" and "Foot of Pride")

Some others I think are very good:

John Wesley Harding
Another Side of...
Desire
Shot of Love
Modern Times
World Gone Wrong
Empire Burlesque
Slow Train Coming

I also like the first album quite a bit. He plays very well on that one.

I like virtually all of them...to some extent...but I have a hard time relating to most of the stuff on "Love and Theft", for example. "Nashville Skyline" has some nice songs on it, but it doesn't grab my attention all that much.