I would strongly suggest EVERYONE see the 60th Fireworks "Disneyland Forever" from the Hub/Main Street at least once. Also make sure you see Paint the Night. For those going to the Anniversary party make use of that special showing! Currently they have two showings of the parade and people are waiting 2.5-3 hours for the first parade, so seeing it with lighter crowds at the party will be nice! If you have 3 or 4 Nights in the parks and you are able to hit the fireworks, Paint the Night, and Fantasmic then I think you could go and see World of Color Celebrate. While NPH is a very talented individual he is featured VERY heavily in this show. I think he has more screen time then his "co-host" Mickey Mouse. While the fountains were the real stars of the Original WOC this show uses a lot more projections and less fountains. (It's still a good show, just not as many show stopping moments as the original.)
If you have never seen Disneyland's version of Fantasmic it is really great. It is unique in that it takes place on Tom Sawyer Island (not a separate viewing stage), a few hours earlier you can be playing on the Island or riding on the Mark Twain River Boat, then it comes to life with fireworks, characters, music, etc. Its more of an intimate experience. Going with the Blue Bayou or River Belle Terrace dining packages is the best way to guarantee the best seats with very little hassle or waiting. We saw it two nights with the regular FastPass system and you can still get decent seats going that route, but it will require more waiting, planning, etc. (You can look for tips on seating in the Disneyland section of these boards.)
As for me we have the Surf's Up Breakfast after the 10K, and we will be at Steakhouse 55 before our flight home on Sunday morning. Plaza Inn does have a great breakfast with a wide variety of characters, but if you are looking to maximize park time and kill some time after the 5K, the Surf's up breakfast is a great option (a bit cheaper then Goofy's kitchen, and the only breakfast that Mickey appears at.)