Joan Cusack averages 6.26 across 44 rated films as an actor, ahead of John Cusack at 6.10.
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
 Grosse Pointe Blank | 1997 | 7.3 | Writer, as Martin Q. Blank | as Marcella |
| Cradle Will Rock | 1999 | 6.7 | as Nelson Rockefeller | as Hazel Huffman |
 High Fidelity | 2000 | 7.4 | Writer, as Rob Gordon | as Liz |
 Martian Child | 2007 | 6.7 | as David | as Liz |
 War, Inc. | 2008 | 5.5 | Writer, as Hauser, Producer | as Marsha Dillon |
