Foucault

Archaeology of Knowledge (a reading guide)
Discipline and Punish (reading guide)

Critical assessments
De Certeau (reading guide) (very good critique of Foucault's tactical obscurity. Applied to Bourdieu too)
Fraser (reading guide) (useful feminist critique of social theory)
Kendall and Wickham (reading guide) (claims to sytematise Foucault's methods)
Ramazanoglou  (reading guide) (edited collection of feminist critiques)