What with the foo fighters being one of my favourite bands and all this may be a bit biased but here goes anyway. Indeed this is their second album, but it is much more accomplished then their first album.
Starts with a rather melodic song in "doll" using Grohl's voice in a way i hadn't heard at all.
It then leads into the sublime "monkey wrench" i bought the album on the merit of this song alone, and after "everlong" (more on that later). I was actually quite shocked at the changes of pace in this album, because it goes straight from "doll" into the amazingly fast "monkey wrench" i was originally shocked, however such change is what keeps this album fresh and invigorating for me.
Next up is "Hey, Johnny Park!" my second favourite song on this album, not very fast, but relatively heavy, with a much slower chorus, all in all a great song.
"My poor brain" starts off very heavy and sounding very well i don't know how to describe it, erm mish-mashed? Then all of a sudden leads into a melodic tune, with a bassline that i really like, the chorus is a lot heavier. After each chorus it leads back to the melodic stage again, i like this song on the merit of it's differing paces, one of the best on the album.
"Wind Up" has one of my favourite intor's of any of the foo fighters music i've heard, very much a rock song, losing the bands vaguely punky sound from their first album, probably due to the lack of a full band (drummer Will Goldsmith left during the recording of this album because of the tight control of producer Gil Norton).
"Up in arms" is a again very much a slower song, with the same style of singing that Grohl used in "doll" being replicated to great effect. A relatively short song [2:15], the end of the song turns into a more fast paced rock song, possibly sounds vaguely punky, but i'll leave you to decide on that.
"My hero" is an amazing song, starts with a fairly heavy drum beat, leading to softer, and eventually heavier guitar/bass. Very catchy, now reverting to a much heavier song, one of the best songs on the album, i love the lyrics in the chorus, grohl using a much more gravelly voice to sing this song.
"See You" is another short song [2:26] sounds vaguely like "Big me" (relying on you having heard it here

) quite a strange song, kinda hard to take it seriously (if you've ever heard "the factory" on the Vines album "highly evolved" you might get what you mean) it's strange, but nevertheless a catchy song, if very out of place.
"Enough Space" has a very nice opening, with one of my favourite basslines on any album, nothing special, just catchy (there i am being biased

) Goes slightly melodic in spaces, before going into a very heavy chorus with Grohl repeating his screaming style of singing last seen in "monkey wrench"
"February Stars" yet another of my favourites on this album, starts very melodic, picks up a bit of pace, but remains much quieter than the majority of the album, apart from the chorus' which are generally quite heavy.
"Everlong" my favourite Foo Fighters song ever, it's totally incredible, everything about it is just well, right, to be honest, starts quiet, but quickly builds up to a brilliant, yet simple tune, fairly fast, but again, purely rock, no punky sounds in here at all.
"Walking after you" a fairly long song at just over 5:00, starts with acoustics, with Grohl using a quieter tone of singing, this is pretty much the onyl song that is very melodic and generally calm on a whole.
"New Way Home" the final song on this great album is one of the longest on the album [5:40] and starts off sounding a bit punky and remains this tune throughout the entire album, a nice way to round off the album, very catchy, not one of the best on the album, the lyrics are nice though.
All in all an excellent album, well worth buying, you won't get bored of it quickly, however if you are expecting something like the Foo Fighters first album then make sure you listen to it before you buy.
I'd rate this:

/
aka. 4.5
P.S. this is my first review, so opinions would be nice thanks.
