Where is the best happy hour on strip in Las Vegas?

New York New York Hotel & Casino has good Irish Pub. Outside Paris Las Vegas the finest seating on The Strip across from Bellagio Hotel . Inside the Wynn Hotel Las Vegas and ARIA Resort & Casino is beautiful. For Dancing and fun Mandalay Bay Resort and Casino.

I've got to go with Double Barrel Roadhouse at Monte Carlo for a couple reasons, one because it's one of the most consistent and most accessible happy hours, running daily from 2-5 pm, but also because of its offerings, including 10+ food items and wine, beer, and cocktails. Best part of the deal is the $4 beer and $5 well cocktails. It is, however, only applicable at the bar. Really a fun spot though and good food and drinks. 

The Pub at Monte Carlo Resort and Casino has a awesome happy hour with good food and a great selection of beer.

I was just at El Segundo Sol recently and they also have a great priced happy hour with $5 margaritas, $3 tequila shots, sangria, cheap mexican food, etc.  And, if you sit near the front you can people and car watch, two of the best things to do on the strip.

Yard House Las Vegas is a chain restaurant known for their huge selection of beers (usually at least 130 different beers on tap) and they have a decent happy hour.  The beer specials aren't outstanding (only $1 off during happy hour) but their food specials are great.

Just south of the strip at Town Square Las Vegas is another Yardhouse and a Blue Martini which has half-price martinis from 4-8pm almost every day.

Searsucker Las Vegas  and Gordon Ramsay Pub & Grill at Caesars Palace. Great drinks and people watching. Do both for a kind of mini happy hour pub crawl.