This is he.

[jophefs]

A Frequently Asked Question about linking verbs concerns the correct response when you pick up the phone and someone asks for you. One correct response would be "This is he [she]." The predicate following the linking verb should be in the nominative (subject) form — definitely not "This is him." If "This is he" sounds stuffy to you, try using "Speaking," instead, or "This is Jacky," substituting your own name for Jacky's — unless it's a bill collector or telemarketer calling, in which case "This is Jacky" is a good response for everyone except people named Jacky. :)