Some talks of Marek Zawadowski:

Categories of Equational Theories (Tbilisi 2012, joint work with S. Szawiel)

Regular Theories and their Monads (Coimbra 2012, Joint work with S. Szawiel)

Theories of Analytic Monads (PSSL 93, Cambridge 2012, joint work with S. Szawiel)  

The coMalcev Monads (PSSL 91, Amsterdam 2010, joint work with S. Szawiel)

Representing multicategories as monads (CT 2010, Genova, joint work with S. Szawiel)

The web monoid and opetopic sets (CT 2010, Genova, joint work with S. Szawiel)

Multitopic Sets via Ordered Face Structures  (CT 2008, Calais)