The most memorable moment in "Superbad" is, no doubt, the scene in the liquor store.

Nerdy high school student 'Fogell' (Christopher Mintz-Plasse), goes into "TJ's Liquor", and
attempts to buy $100 worth of alcohol, sporting a fake ID with a single name: "McLOVIN".

In the middle of his attempt, the store is robbed, and "McLovin" is punched out by the robber.

Two cops (Bill Hader & Seth Rogen) arrive on the scene, get a bang out of the fake name,
and take the kid on a wild tour of the city in their squad car.

These liquor store robbery scenes were filmed at "7 Days Food Store",
in a small strip mall at 1700 Victory Blvd, in Glendale, CA.

         

The strip mall is located at the west/northwest corner of Victory Blvd and Western Ave, just
north of the Los Angeles Zoo and just east of the L.A. Equestrian Center (both in Griffith Park).

The parking lot of that same small strip mall is also where 'Seth' (Jonah Hill) gets hit by a car,
driven by a creepy guy named 'Francis' (Joe Lo Truglio) who then drives Seth &
'Evan' (Michael Cera) to a dangerous house party. That scene was shot in the narrow
parking lot along Victory Blvd, in front of the liquor store, near a yellow locksmith kiosk.

But before that infamous liquor store scene, Seth, convinced that the fake
"McLovin" ID will never work, first tries to steal the booze himself from a supermarket -
but he chickens out after he imagines being murdered by the store's security guard.

Those supermarket scenes were filmed a former Von's market, now called
"Jon's Market", at 1717 W Glenoaks Blvd, in Glendale, CA.

( That's at the northwest corner of Glenoaks & Western Ave,
only one mile northeast of the liquor store. )

Evan's house is seen briefly near the start of the film. That house can be found at
17200 Rayen Street, in Northridge, CA, just east of Louise Ave.

That's on the south side of the street, less than a mile northeast of the block
where they filmed the party house and the police chase scenes.

[ Warning: this is a private home.  Do not trespass on their property,
knock on their door, or do anything else that might disturb the residents.]

The scenes of the kids' high school ("Clark Secondary School") were filmed at El Segundo High School,
at 640 Main Street, in El Segundo, CA (the same high school attended by "Joan of Arcadia").

El Segundo is just south of Los Angeles International Airport (LAX), and north of Manhattan Beach.

In the shot above, the camera is looking east, at the main entrance to the high school's main building
(which faces Main Street). In the shot below (including the school sign), the camera is looking southeast,
towards at a matching brick school building just south of the main building.

The track & field scenes, with 'Seth' running, (then being insulted when he fails to keep up
with the other runners), were also shot at El Segundo High, on the south side of the
school's main (oval) track, behind the south grandstands.

( In the photo above, the camera is looking east/southeast. )