Sometimes you've to analize large blobs and you're not going to read in hex and assembly the entire file to understand globally what it does.
Or probably you're looking for a poster of your favorite binary program.
You can use the bin2tab/tab2gml or gdl2gml rsc scripts:
$ rsc bin2tab /bin/false | rsc tab2gml > false.gml
The GML files can be opened with yEd.
IDA generates a nice graphos of binaries, but they're in wingraph format and it's not possible to open these files (GDL) on non-w32 systems. So, you can convert them with gdl2gml and later use yEd in the same fashion:
$ cat my-ida-graph.gdl | rsc gdl2gml > my-ida-graph.gml