Here's the rest of the fan cast because I ran out of space:
Orion Black:
Colin Firth
Lyall Lupin:
Tom Hanks
Hope Lupin:
Vera Farmiga
Fleamont Potter:
Jeff Goldblum (he may not look exactly like ATJ but he just seems right in my opinion)
Euphemia Potter:
Susan Saradon(The potters really like redheads huh?)