MxPx has been around on the punk scene for some time now, starting in the early to mid 90's, but only in the past few years have their songs gotten any national press. However, with the release of Panic, MxPx has shined up and perhaps even pepped up enough for mass consumption to boost them completely in the mainstream.
For instance, their first single (college radio single for sure), is a relatively repetitive, although still quite entertaining song, called "Heard That Sound". This is not the only song like this on the album though, as many of the other songs lack the drive that early MxPx albums had, such as `Young and Depressed' (most likely the second single.)
Still though, even with MxPx's gradual conversion (along with a lot of punk bands) to a more popular and pleasing sound, they still present a good album. Because although this is not the MxPx of old, for better or worse, many would never have heard of them if not for their new polish and recent acclaim.