Weak dopants, like C-60, (which have LUMO level within the band gap of conducting polymer (CP)) may provide various types of intractions with self-localized (SL) excitations of CP chain : solitons (S degrees, S), polaron/bipolarons (P/BP) or exciton-polarons (Ex), whose electronic levels are also located deeply inside the gap. In the present paper we analyse some typs of intractions : 1) "Chemical reaction" type charge transfer (CT) processes between charged (P/BP, S) and neutral (S degrees, Ex) excitations with C-60 molecules intrcallated between chains of CP. We stress the important role of SL states of C-60 molecule itself : string type polarons (Pc) and bipolarons BPc2-) in the stabilisation of this reactions through reorientations of string P-c(-)/BPc2- relatively to CP chains resulting in suppression of backward CT recombination. 2) The C-60 mediated interchain hoping of electrons is considered within Holstein-Rahba molecular chain polaron approximation, which allows to find exact analytical solutions for two types of local Paround neutral C-60 dopant : symmetric (SP) and assymetric (AP) in which the extension (radius) and energy of P change compated to free P. The spectrum of local phonons around P (so called IRAV) is found as a function of C-60 mediated hoping strength gamma from which the stability criterions for SP in N=2 and 3 chain case are found. Sp states are discussed as intermediates for the interchain hoping of (sic).